ASTRO SPACE NEWS

A DIVISION OF MID NORTH COAST ASTRONOMY (NSW)

(ASTRO) DAVE RENEKE

SPACE WRITER - MEDIA PERSONALITY - SCIENCE CORRESPONDENT ABC/COMMERCIAL RADIO - LECTURER - ASTRONOMY OUTREACH PROGRAMS - ASTRONOMY TOUR GUIDE - TELESCOPE SALES/SERVICE/LESSONS - MID NORTH COAST ASTRONOMY GROUP (Est. 2002)   Enquiries: (02) 6585 2260       Mobile: 0400 636 363        Email: davereneke@gmail.com

WANT A HOLIDAY THAT'S LITERALLY 'OUT OF THIS WORLD?'

   NOW IN OUR FIFTH YEAR ON NORFOLK ISLAND

WHAT THEY'RE SAYING.....

"Absolutely amazing!! I Learned so much. Dave's knowledge is amazing, and he made it sound so simple. What a great night, not what I expected! It's an awesome introduction to the night sky for first timers through the large telescope. Maureen Rivendell." Port Macquarie.

"This evening changed forever my understanding of the night sky. We saw 100km wide Moon craters, Jupiter and Saturn up close, amazing star clusters. Highly recommended for the entire family!" Ken Sorenson. Adelaide

" Thanks so much Dave for a night we will never forget! The impact has been huge on our kids, especially those incredible close-up views of the Moon, and I have pics I took to prove it . Will re-book." Karen Amato. Wauchope NSW See the                                                                  * SEE our FB Page  https://norfolkislandtravel.co/stargazing-with-dave/

* Check our Video of NF Island here: https://www.facebook.com/reel/1019728771019070/?fs=e&fs=e

AN ONLINE ASSESSMENT -DavidReneke.com – Astronomy, Education & Exploration

There are spacecraft that complete their missions and disappear into history. Then there is Voyager 2 — a 48-year-old machine that simply refuses to give up. NASA engineers have pulled off another remarkable rescue operation, known as the "Big Bang", to squeeze more life out of the spacecraft as its power supply slowly fades.

Launched in 1977, Voyager 2 is powered by nuclear generators that convert heat from decaying plutonium into electricity. But that power is gradually declining. Each year, the spacecraft loses roughly four watts of electrical power. For a spacecraft billions of kilometres from Earth, every watt matters.

Voyager needs electricity not only for its scientific instruments, but also to keep vital components warm. Space is incredibly cold, and some systems could eventually stop working without heat. NASA engineers have therefore been playing an extraordinary game of electrical survival, switching off equipment that is no longer essential and finding clever ways to reduce the spacecraft's energy demands.

The latest solution is particularly ingenious. Engineers have replaced three power-hungry heating devices with alternatives that use less electricity. The saved power can then be redirected to scientific instruments that are still working. NASA calls the operation "Big Bang" because several changes are being made together — essentially an energy makeover for a spacecraft designed almost half a century ago.

Imagine trying to keep an old house running when its power supply is shrinking. You switch off unnecessary appliances and replace inefficient ones with energy-saving alternatives. That is basically what NASA is doing with Voyager 2, except the house is billions of kilometres away and there is no electrician who can simply drive over and fix it.

And the rewards are enormous. Voyager 2 is still studying the mysterious environment beyond the Sun's protective bubble — the heliosphere — where the solar wind gives way to interstellar space. The spacecraft has already made history, flying past Jupiter and Saturn before continuing to Uranus and Neptune, becoming the only spacecraft ever to visit all four giant planets.

In 2018, Voyager 2 crossed the heliopause and entered interstellar space. Its twin, Voyager 1, entered interstellar space in 2012. Both spacecraft are now scientific time capsules, travelling farther from the Sun than anything humans have previously sent into the great cosmic unknown.

Even communicating with Voyager 2 is an extraordinary achievement. It is now more than 12 billion miles from Earth, and a command sent from NASA takes many hours to reach it. Engineers then have to wait for the spacecraft to respond, meaning there is no quick fix if something goes wrong.

Every command must be carefully tested before it is sent because engineers are operating a spacecraft almost 50 years old from billions of kilometres away. The computers, electronics and communications systems were designed in another technological age. And somehow, Voyager 2 still works.

NASA is also considering similar power-saving measures for Voyager 1. In April 2026, NASA switched off one of Voyager 1's scientific instruments to conserve precious electricity. As the spacecraft's power continues to decline, engineers will have to make increasingly difficult decisions about which instruments can be sacrificed and which are important enough to keep operating.

Eventually, the Voyagers will fall silent. Their nuclear power sources cannot last forever, and more systems will gradually have to be switched off. But NASA is determined to keep them working for as long as possible, squeezing every last drop of science from these extraordinary machines.

The Voyagers were launched when disco was booming, mobile phones did not exist and personal computers were still a novelty. Yet nearly half a century later, they are still sending whispers back across the darkness.

Voyager 2 is more than an ageing spacecraft. It is a survivor, a scientific pioneer and a remarkable reminder of how far human curiosity can travel. For a machine launched in 1977, its greatest adventure may still be its final one.

The universe has just become a little stranger. Astronomers using NASA's James Webb Space Telescope have found compelling evidence for an extraordinary object they call a "black hole star" — something that sounds like science fiction but could help solve one of astronomy's biggest puzzles.

The story begins with the James Webb Space Telescope, which has been peering deep into space and, because light takes time to travel, looking back billions of years into the young universe. Since Webb began its observations, astronomers have noticed something unexpected: tiny, mysterious red objects scattered across the early cosmos. They became known simply as "little red dots." They were small, extremely bright and surprisingly common. But nobody could quite agree on what they were.

Now, astronomers think they may have a very dramatic explanation.

A black hole star isn't really a normal star at all. The idea is that a rapidly growing supermassive black hole is buried inside a huge, dense cloud of extremely hot gas. Material is being pulled into the black hole, releasing enormous amounts of energy. The surrounding gas absorbs and re-emits some of that energy, making the whole object glow in a way that can look remarkably star-like.

One particular object, called GLIMPSE-17775, has given astronomers some of their strongest evidence yet. Webb was able to break its light into a detailed spectrum — rather like taking a cosmic fingerprint. More than 40 distinct spectral features were detected, giving researchers several clues that a black hole wrapped in dense gas could be powering the object.

And this matters because of another cosmic mystery. Astronomers have long wondered how some supermassive black holes became so enormous so quickly after the Big Bang. The universe was still remarkably young, yet somehow these monsters had already grown to extraordinary sizes.

Black hole stars could provide a missing link. Imagine the early universe as a vast construction site. Huge clouds of gas are collapsing, stars and galaxies are forming, and somewhere inside all that chaos, a black hole begins feeding furiously. Surround it with enough gas and it could grow extremely rapidly. Eventually, the cocoon could change or disappear, leaving behind the kind of giant black hole we see at the heart of galaxies today.

That could mean the mysterious little red dots aren't something completely exotic after all. They may be young black holes caught in the middle of their growth spurt. There is still plenty to learn. Astronomers are continuing to investigate whether all of the little red dots have the same explanation, or whether several different types of objects are hiding among them.

But that is exactly what makes the discovery so exciting. The James Webb Space Telescope was built to look at the earliest chapters of cosmic history. And once again, it has found something nobody expected — tiny red specks that may actually be enormous black holes wearing a cloak of glowing gas. In the universe, things are rarely what they first appear to be.

NASA engineers have pulled off a remarkable rescue operation on Voyager 2, the spacecraft that has been travelling through space since 1977. The probe is now more than 20 billion kilometres from Earth, yet it is still sending valuable scientific information back home.

The problem is simple but serious: Voyager 2 is running out of electrical power. Its electricity comes from plutonium-powered generators, and those generators naturally produce less power as the years pass. The spacecraft loses roughly four watts of electrical output every year.

NASA engineers have therefore had to become extremely careful about how every watt is used. Over the years, instruments that are no longer essential have been switched off, while power has been redirected to the systems most important for studying deep space.

The latest solution has been nicknamed the "Big Bang." Rather than simply switching another important system off, engineers changed the way several parts of the spacecraft use power. The aim is to keep Voyager 2 warm enough to function while freeing precious electricity for its remaining scientific instruments.

That is particularly important because Voyager 2 is doing something no other spacecraft has ever done. It crossed the boundary of the Sun's protective bubble, called the heliosphere, in 2018 and is now exploring the space between the stars. Its measurements are giving scientists a rare opportunity to study this distant environment directly.

Voyager 2 has already survived almost half a century in the harshness of space. It flew past Jupiter and Saturn before continuing on to Uranus and Neptune, becoming the only spacecraft ever to visit all four giant planets up close.

Today, it is a very different mission. There are no planets nearby to photograph. Instead, Voyager 2 is quietly measuring magnetic fields, particles and plasma waves in interstellar space — information that cannot be collected from Earth in quite the same way.

The extraordinary part is that the spacecraft was designed in an era when computers were primitive by today's standards. Its computers operate at only a tiny fraction of the processing power found in a modern smartphone. Yet after decades of operation, engineers on Earth are still finding ingenious ways to keep this ancient machine alive.

The rescue does not mean Voyager 2 can continue forever. Its power supply will keep declining, and more instruments will eventually have to be switched off. But every extra year gives scientists another chance to collect measurements from a region of space that no other spacecraft has reached.

For a machine launched nearly 50 years ago, Voyager 2 is proving that some of humanity's greatest space missions can have extraordinarily long afterlives. It is still travelling into the darkness — and, for now, it is still talking to Earth.

Mars may one day have something it does not have today — a spectacular ring system. The culprit is Phobos, the larger and closer of Mars' two small moons. But this is not a story about a moon arriving peacefully. Phobos is slowly spiralling towards Mars, and its ultimate fate is destruction.

Phobos is already incredibly close to Mars, orbiting only about 6,000 kilometres above the planet's surface. Mars' gravity is gradually dragging it inward at about 1.8 centimetres a year. That may sound insignificant, but over millions of years the effect becomes enormous.

As Phobos gets closer, the gravitational forces acting on it become stronger. Scientists believe the moon is probably a loosely held-together body, and its battered surface is already marked by long grooves and scars. Eventually, Mars' tidal forces will become strong enough to pull the moon apart.

Exactly when this happens depends on the strength and internal structure of Phobos. One influential model suggests that its weakest material could begin breaking away in roughly 20 to 40 million years. Other NASA estimates put the eventual destruction somewhat later, around 30 to 50 million years. So the exact date remains uncertain.

If Phobos is torn apart before it crashes into Mars, its pieces will spread around the planet. Instead of one small, irregular moon, Mars could temporarily be surrounded by a broad ring of dust, rocks and fragments — rather like a much smaller version of Saturn's magnificent rings.

The ring would not last forever. Over time, some of the debris would fall towards Mars while other material would spread out or disappear. Eventually, the spectacular ring would fade away, leaving Mars once again with its two small moons — or perhaps only Deimos, depending on what happens to the remaining material.

So Phobos has a strange destiny. It is not simply orbiting Mars; it is slowly falling towards it. Millions of years from now, that journey could end with one of the most dramatic transformations in the Solar System — a doomed moon shattered by gravity and turned into a temporary ring around the Red Planet.

For now, however, Phobos continues its rapid orbit. It circles Mars in just 7 hours and 39 minutes, completing several orbits during a single Martian day. The tiny moon is a reminder that even apparently permanent worlds are constantly changing — sometimes on timescales far longer than a human lifetime.

Imagine looking into the night sky and knowing that the nearest star system beyond our own is only 4.24 light-years away. On a cosmic map, that sounds like next door. In reality, it is an almost unimaginable distance. That nearby system is Alpha Centauri, our closest stellar neighbour. It contains three stars: Alpha Centauri A and B, a pair of stars broadly similar to our Sun, and the much smaller red dwarf Proxima Centauri. Proxima is actually the closest individual star to the Sun. And around Proxima is a fascinating world called Proxima Centauri b.

The planet is at least about 1.07 times the mass of Earth and completes an orbit around its star in just 11.2 days. It also sits within the star's so-called habitable zone — the region where temperatures could, under the right conditions, allow liquid water to exist.That sounds promising. But there is a very big catch: we have absolutely no evidence that Proxima b has life.

The phrase "habitable zone" can be misleading. It does not mean a planet is habitable, let alone inhabited. Proxima b circles its star extremely closely, and Proxima Centauri is a red dwarf known for powerful stellar activity. Radiation and stellar eruptions could make life much more difficult.

Scientists are still trying to work out whether the planet even has a substantial atmosphere. Without one, the surface could be a very hostile place. On the other hand, computer models suggest that under some conditions, an atmosphere and ocean could survive. For now, Proxima b remains a tantalising mystery.

Getting there is an even bigger problem. Our fastest spacecraft are incredibly quick by human standards, but painfully slow compared with the distances between stars. Voyager 1 is travelling at roughly 17 kilometres per second relative to the Sun. If a spacecraft could maintain that speed directly towards Proxima Centauri, the journey would take around 75,000 years.Think about that. A spacecraft launched today would still be travelling when thousands of generations of humans had come and gone.

But there is another possibility — one that sounds almost like science fiction. A project called Breakthrough Starshot has proposed using enormous lasers on Earth to push tiny spacecraft equipped with ultra-thin sails to perhaps 20 per cent of the speed of light. At that speed, a probe could potentially reach Alpha Centauri in just over 20 years.

That would be revolutionary. But there is a huge difference between an exciting idea and a working spacecraft. Engineers would have to develop powerful laser systems, incredibly light but durable sails, tiny electronics capable of surviving decades in space, protection against interstellar dust and a way for the miniature probe to send its discoveries back across more than four light-years.And there is another challenge: the probe would probably race past its target rather than slow down and go into orbit.

Sending humans would be vastly harder. A crewed spacecraft would need life support, shielding, power, food and a way to slow down at the other end. Nothing remotely capable of doing that exists today. 

So Alpha Centauri remains tantalisingly close — and impossibly far away. It is close enough for us to study, close enough to dream about visiting and perhaps, one day, close enough to send a tiny robotic explorer. For now, though, Proxima b is not another Earth waiting to be discovered. It is something more intriguing: a nearby world whose greatest secrets are still waiting to be revealed.

When we imagine the hazards of space travel, our minds usually drift to catastrophic rocket failures, deadly cosmic radiation, or the freezing vacuum of space. Yet, one of the most pressing threats facing modern spacefarers is far more subtle and quietly insidious: astronaut vision loss. As space agencies prepare for long-duration missions back to the Moon and onward to Mars, scientists are racing to solve a medical condition that threatens to leave space explorers functionally blind.

On Earth, gravity constantly pulls our bodily fluids downward toward our feet. In the weightlessness of microgravity, however, those fluids redistribute evenly throughout the body, shifting about two liters of fluid upward toward the head. This shift creates sustained pressure inside the skull, pressing directly against the back of the eyeball, flattening the globe, swelling the optic nerve, and distorting the retina. Known medically as Spaceflight-Associated Neuro-ocular Syndrome, or SANS, this condition leads to progressive farsightedness and blurry vision. While some astronauts recover after returning home, others suffer permanent visual damage.

To combat SANS, organizations like the European Space Agency are adapting innovative technologies originally designed for elderly patients on Earth. One promising tool is a portable eye-examination device built for octogenarians to perform self-administered eye checks at home for age-related conditions. In orbit, the same simple, handheld design allows astronauts to conduct rapid eye exams on themselves without requiring heavy equipment or specialized medical training, giving researchers real-time insight into how space affects the eye.

Finding a solution is critical for the future of deep-space exploration. While blurry vision on the International Space Station can be managed with adjustable eyeglasses, a multi-year journey to Mars poses a serious danger if chronic pressure damages an astronaut's eyesight permanently. By repurposing simple medical tools alongside new interventions, like specialized sleeping chambers that draw fluids back down toward the feet, space agencies hope to protect human sight. In a fascinating twist, the same user-friendly tools keeping senior citizens healthy in their living rooms may soon preserve the vision of the pioneers traveling to distant worlds.

For centuries, people have gazed at the Sun believing it was little more than a blazing ball of fire. But thanks to the most detailed images ever captured, astronomers have uncovered something completely unexpected. The Sun's surface isn't smooth at all—it's alive with countless tiny ripples and swirling whirlpools.

These newly discovered whirlpools look remarkably like the flowing patterns painted by Vincent van Gogh in his famous masterpiece The Starry Night. Nature, it seems, has been creating its own version of the artwork all along.

The Sun's surface is in constant motion. Hot gas rises from deep inside, cools, and sinks again, creating an endless cycle of movement. Scientists have known about this process for years, but these new images reveal that the movement is far more complex than anyone imagined. Tiny whirlpools, some only a few hundred kilometres across, twist and spin everywhere across the Sun's surface.

Although they are small by solar standards, these spinning structures may play an enormous role in powering the Sun.

Researchers believe the whirlpools act like miniature tornadoes, twisting and tangling the Sun's powerful magnetic fields. As these magnetic fields become stretched and wound tighter, they store huge amounts of energy. Eventually that energy can be released suddenly in the form of powerful solar flares or even giant eruptions known as coronal mass ejections.

These explosions hurl billions of tonnes of charged particles into space. When they head towards Earth, they can trigger spectacular auroras but also interfere with satellites, radio communications, GPS systems and even electricity networks.

Understanding how these tiny whirlpools work could help scientists predict when the Sun is preparing to unleash one of these storms. Better forecasts would give satellite operators, airlines, astronauts and power companies more warning before space weather strikes.

The discovery was only possible because of a new generation of solar telescopes capable of seeing details on the Sun never observed before. Every improvement in technology allows astronomers to uncover another hidden layer of our nearest star.

It's a reminder that even the object we know best still holds many secrets. The Sun has been shining on Earth for more than four billion years, yet it continues to surprise us.

Those tiny swirling patterns may look beautiful, almost artistic, but they could also hold the answer to one of the biggest mysteries in solar science—where the immense energy behind the Sun's most violent outbursts really comes from. Sometimes the biggest discoveries begin with the smallest whirlpools.

Imagine a place where nothing can escape—not even light. It sounds like science fiction, but these strange objects really do exist. They are called black holes, and they are among the most mysterious things in the universe. We can't see a black hole because it gives off no light. Instead, we find them by watching how they affect the stars and clouds of gas around them. Their gravity is so powerful that anything that gets too close is pulled in.

The idea of black holes isn't new. Back in 1783, an English scientist named John Michell wondered if a very heavy star could have gravity so strong that even light couldn't escape. It was an incredible idea for a time when no one really understood how stars worked. Then, in the 1960s, astronomers found convincing evidence they were real. In 2019, the world saw the first picture of one—a bright ring of glowing gas surrounding a dark centre.

A black hole begins life as a giant star, much bigger than our Sun. Like all stars, it shines because it burns fuel deep inside. But one day that fuel runs out. Without anything to hold it up, the star collapses under its own enormous into a ball only a few kilometres across. It becomes so tightly packed that its gravity grows unbelievably strong. Once anything crosses that line, there is no way back. Even light cannot escape, which is why black holes appear completely black.

Many people think black holes are giant vacuum cleaners, sucking up everything around them. That's not true. They only pull strongly on objects that come close.

If someone fell towards a black hole, something very strange would happen. The pull of gravity on their feet would be much stronger than the pull on their head. Little by little they would be stretched longer and thinner until they looked like a strand of spaghetti. Scientists even have a name for this strange effect—"spaghettification."

Black holes also do something even stranger. They can slow down time. Einstein predicted that stronger gravity makes time pass more slowly. Near a black hole, a clock would tick more slowly than one on Earth. If astronauts could somehow travel close to a black hole and safely return, they might find that many more years had passed back home than they had experienced themselves. It sounds impossible, but experiments have shown that gravity really does affect time.

Some people wonder if black holes are giant tunnels leading somewhere else. Scientists have imagined mysterious shortcuts through space called wormholes. These would be like tunnels through a mountain instead of driving all the way around it. They might connect distant parts of the universe, or perhaps even different universes altogether. It is an exciting idea, but no one has ever found a wormhole, and we don't know if they really exist.

Scientists have also imagined something called a white hole. It would be the exact opposite of a black hole. A black hole only pulls things in. A white hole would only push things out. Nothing could ever enter it. So far, no one has found a white hole anywhere in space. For now, they remain an interesting theory.

Could we ever travel through a black hole? With everything we know today, the answer is almost certainly no. The crushing gravity would destroy any spacecraft long before it reached the centre. But science is always discovering new things, and the universe has surprised us many times before.

Black holes may be the darkest places in the universe, yet they are helping us unlock some of its brightest secrets. Every discovery brings us one step closer to understanding gravity, time, space and the incredible universe we call home.

NASA is preparing to launch what could become one of the most exciting space telescopes ever built. If everything goes to plan, the Nancy Grace Roman Space Telescope will blast into space on August 30 aboard a powerful Falcon Heavy rocket. Scientists believe it could completely change the way we see the Universe and reveal secrets that have remained hidden since the beginning of time.

Every great space telescope has transformed our understanding of the cosmos. The Hubble Space Telescope amazed us with spectacular pictures of glowing nebulae, distant galaxies and dying stars. More recently, the James Webb Space Telescope stunned the world by peering farther back in time than ever before, showing galaxies that existed not long after the Big Bang.

Now it's Roman's turn. But Roman has a very different mission. Instead of looking closely at tiny patches of sky like Hubble or Webb, Roman will photograph enormous areas of space all at once. Imagine standing at a door. Hubble is like peeking through the keyhole. Roman throws the whole door wide open. Suddenly you can see everything in front of you instead of just one small detail.

That incredible wide view will allow astronomers to study the Universe on a scale never before possible.

During its mission, Roman is expected to map around two billion galaxies. That's such a huge number it's almost impossible to imagine. Each galaxy contains millions, or even billions, of stars. Somewhere among them may be countless planets, some perhaps not so different from Earth.

Roman will also search for thousands of new planets beyond our Solar System. Some may be giant worlds larger than Jupiter, while others could be rocky planets more like our own. Every new discovery helps scientists understand how planets form and whether life might exist elsewhere in the cosmos. Yet perhaps Roman's greatest challenge is solving two of astronomy's biggest mysteries.

Scientists know that everything we can see—stars, planets, gas clouds and galaxies—makes up only about five percent of the Universe. The remaining 95 percent is invisible. It is made of mysterious substances known as dark matter and dark energy.

Dark matter acts like invisible glue, helping hold galaxies together. Dark energy appears to be pushing the Universe apart faster and faster as it expands. Although these mysterious forces shape the entire cosmos, nobody knows exactly what they are. Roman has been specially designed to gather clues that could finally help unlock these cosmic mysteries. The answers may completely rewrite our understanding of how the Universe works.

The telescope's powerful instruments will also create an astonishing flood of information. Every year it is expected to send more than 500 terabytes of data back to Earth. That's more information than the Hubble Space Telescope collected during its entire 35-year mission. Hidden inside that mountain of data could be discoveries nobody has even imagined.

History shows that every time we build a more capable telescope, the Universe surprises us. Hubble revealed breathtaking beauty. James Webb uncovered ancient galaxies and challenged long-held ideas about the early cosmos.

Roman may go even further. It could discover strange new types of galaxies, reveal planets unlike anything we've ever seen, or uncover clues about the invisible forces controlling the Universe. It may even answer questions scientists haven't yet thought to ask. That's what makes this mission so thrilling. The greatest discoveries are often the ones nobody expects.

As the countdown to launch begins, astronomers around the world are waiting with enormous excitement. Within weeks, humanity could be opening another remarkable chapter in space exploration. Once again, we'll be reminded that the more we learn about the Universe, the more astonishing it becomes—and the greatest adventures are still waiting among the stars.

When astronauts eventually set foot on the Moon for months at a time—or establish the first human settlement on Mars—they'll face a challenge that's just as important as rockets and spacesuits: growing fresh food. Taking enough supplies from Earth simply isn't practical for long missions, so future explorers will need thriving gardens millions of kilometres from home.

That raises an intriguing question. What happens to seeds and plants after spending long periods in space?

Scientists have been searching for the answer for decades. Experiments aboard the International Space Station (ISS) have shown that many seeds survive spaceflight remarkably well. Once returned to Earth, most germinate normally. Yet living in orbit is far from ideal for plants. Microgravity, increased radiation and an unusual environment all influence the way they grow.

On Earth, gravity tells roots to grow down and stems to grow up. In space that natural guide disappears. Roots can grow in unexpected directions, while water no longer drains through soil as it does at home. Instead, it clings to roots in tiny floating droplets, making it harder for plants to absorb oxygen. Researchers have had to invent clever watering systems that deliver just the right amount of moisture without drowning the roots.

Radiation presents another challenge. Outside Earth's protective atmosphere, energetic particles constantly bombard spacecraft. Over long periods they can damage plant cells and even alter DNA. Most changes are harmless, but scientists carefully monitor seeds for mutations that could affect future harvests. Surprisingly, some plants become more resilient after exposure to stressful conditions, opening the door to developing tougher crop varieties.

Scientists have also discovered that a plant's nutritional value can change in space. Studies of lettuce, radishes, dwarf wheat and leafy greens have shown small variations in vitamin C, antioxidants and other beneficial compounds. Sometimes the levels decrease slightly, while in other cases they actually increase as plants respond to environmental stress. Flavour and texture can also differ from Earth-grown produce. The good news is that carefully controlled lighting, nutrients and temperature can produce crops that are healthy, safe and enjoyable to eat.

Growing food in space isn't only about nutrition. Fresh vegetables also provide psychological benefits. Caring for living plants gives astronauts a welcome connection to Earth, while the colour, smell and taste of fresh produce can lift morale during long missions in the isolation of space.

The technology being developed is impressive. Instead of traditional soil, many experiments use hydroponics, where roots grow in nutrient-rich water, or aeroponics, where they are misted with nutrient solutions. LED lights provide the perfect mix of colours for photosynthesis while using very little electricity. Computers constantly monitor moisture, temperature, nutrients and carbon dioxide to create the ideal growing conditions.

These techniques will eventually be adapted for the Moon. Lunar greenhouses will probably sit inside pressurised habitats or beneath protective domes shielded from radiation and extreme temperatures. Processed lunar soil, known as regolith, may one day help anchor roots, while recycled water and astronaut waste will become valuable resources in a nearly closed farming system.

Mars presents even greater challenges, but also exciting possibilities. Its day is only about 40 minutes longer than Earth's, making lighting schedules easier for crops. Scientists hope to use water ice buried beneath the Martian surface and carbon dioxide from the thin atmosphere to help sustain future greenhouses.

Every successful experiment brings humanity one step closer to becoming an interplanetary species. Tiny seeds that begin their journey inside a spacecraft today could someday feed entire communities on distant worlds. Learning how plants adapt to space isn't just advancing science—it may ultimately determine whether humans can truly call the Moon or Mars a second home.

What if you could travel back to the birth of the universe? No spaceship can do it, but NASA's James Webb Space Telescope comes astonishingly close. Floating nearly 1.5 million kilometres from Earth, Webb is peering so deeply into space that it is looking back more than 13 billion years in time, sending home breathtaking images of galaxies that existed long before Earth, the Sun, or even our Milky Way had fully formed.

It sounds like science fiction, but it's based on one remarkable fact. Light, although travelling at an incredible 300,000 kilometres a second, doesn't move instantly. Because the universe is unimaginably vast, light from distant objects can take billions of years to reach us. The sunlight warming your face today left the Sun about eight minutes ago, while the nearest star beyond the Sun is seen as it was more than four years ago. When Webb photographs the most distant galaxies, however, it captures light that has been travelling for an astonishing 13.5 billion years, making the telescope the closest thing humanity has ever built to a time machine.

Every image Webb sends back is more than just a beautiful photograph—it is a message from the distant past. The galaxies we see may have grown, collided with others or changed beyond recognition during the billions of years their light has been crossing the universe. Some may not even exist today in the form we see, making each picture a priceless snapshot of cosmic history.

Webb achieves this feat because it sees the universe differently from any telescope before it. Instead of relying mainly on visible light, it specialises in infrared light. As the universe expands, the light from the earliest galaxies is stretched into infrared wavelengths that ordinary telescopes cannot detect. Webb was designed specifically to capture this ancient, hidden light, opening an entirely new window on the universe.

What it has discovered has stunned astronomers. Among its record-breaking finds is a galaxy known as MoM-z14, whose light has travelled about 13.5 billion years to reach Earth. Another remarkable object, JADES-GS-z14-0, appears exactly as it looked less than 300 million years after the Big Bang, when the universe was only about two percent of its present age. These are not simply distant galaxies—they are direct glimpses of the universe in its infancy.

Even more surprising is that these early galaxies don't behave the way scientists expected. For decades, astronomers believed the first galaxies would be small, faint and slowly growing. Instead, Webb keeps uncovering galaxies that are unexpectedly bright, massive and already rich in heavier elements. Some studies suggest there are more than 100 times as many brilliant young galaxies as leading theories predicted, forcing researchers to rethink how quickly the first galaxies formed after the Big Bang.

Why couldn't the famous Hubble Space Telescope reveal these hidden treasures? The answer lies in Webb's superior design. Its giant 6.5-metre mirror collects more than six times as much light as Hubble's 2.4-metre mirror, while its advanced infrared instruments allow it to detect galaxies up to 100 times fainter than Hubble could ever see. For the first time, astronomers are directly exploring the mysterious era known as Cosmic Dawn, when the first stars ignited and the earliest galaxies emerged from the darkness.

With every new observation, James Webb is rewriting the story of our cosmic origins. As it probes ever deeper into the universe, it also journeys farther back in time, revealing a cosmos that is younger, stranger and far more spectacular than anyone imagined. Each new image reminds us that the universe still holds extraordinary secrets—and that some of its greatest discoveries are only just beginning.

Apollo11 – In Retrospect. A Personal Journey

In 2008 I was News editor for Australia's Sky & Space Magazine visiting all the historic people and places in Space history in the USA. I had a personal invitation for this visit to meet up with history - and it still gives me a 'buzz'...pardon the pun. THIS is a revision of that day and a retrospective version of how things were, and could have been.

The door opened without ceremony. No spotlight. No drumroll. Just a firm handshake from a man who had walked on the Moon — and inside, a living room that quietly held the weight of history.

Visiting Buzz Aldrin at his home was not what you'd expect from someone who helped change the course of the 20th century. There were no grand trophies dominating the space. Instead, framed mission patches, a carefully displayed model of the Lunar Module Eagle, and photographs that have since become icons of human achievement. The setting was modest. The story was not.

Buzz, Lunar Module Pilot of Apollo 11, was the second human being to set foot on the Moon on July 20, 1969 after the reclusive neil Armstrong. But what fascinated me most weren't the famous headlines. It was the fine detail — the seconds, decisions and sensations that rarely make it into documentaries.

He described those final moments of descent. The Lunar Module was low on fuel — roughly 30 seconds remaining — when Neil Armstrong took manual control to avoid a boulder-strewn crater. The onboard computer flashed 1201 and 1202 alarms, signalling executive overload. In Houston, guidance officer Steve Bales made the split-second decision to continue. Abort would have meant a very different chapter in history.

Then came the dust. As Eagle descended, the engine plume kicked up lunar regolith, creating a blinding haze. There were no trees, no buildings, no atmosphere to soften perspective. Just harsh light and shadow. Armstrong relied on instinct honed from years as a test pilot. When the contact light illuminated and the engine shut down, Aldrin calmly confirmed, "Okay. Engine stop." That composure under pressure defined the mission.

But there's another presence in this story — quieter, reflective, almost reluctant to be mythologised. Neil Armstrong, by nature reserved and semi-reclusive in later life, reinforces something that rarely makes it into public speeches: sheer amazement. He speaks softly about the lunar surface. Not theatrically. Not dramatically. Simply, honestly.

The horizon felt closer than expected, he said, because the Moon is smaller. The sky was completely black — even with the Sun glaring down. The surface wasn't smooth and poetic as imagined in paintings; it was textured, sharp, ancient. The regolith behaved almost like powdery snow mixed with ash. And yet, despite the training, the simulations, the rehearsals — nothing quite prepared him for the reality of stepping onto another world.

When pressed He admits something profound: being chosen as the first was an honour that weighed heavily. The decision had been NASA's, based on crew roles and procedures, but the historical symbolism was undeniable. Armstrong understood that the first step would echo beyond engineering or politics. It would belong to humanity. There's no bravado in his recollection. Only a kind of quiet wonder.

Buzz detailed the physical strain. The suits were pressurised to about 3.7 psi, making every movement deliberate. Heart rates exceeded 150 beats per minute during the moonwalk. This was not a stroll in low gravity; it was demanding work. Before exploration began, Armstrong collected the contingency sample — a small bag of lunar soil gathered immediately in case they had to abort. Insurance for history.

They deployed experiments that still function today. The Laser Ranging Retroreflector remains in place, allowing scientists to measure the Moon's recession from Earth — about 3.8 centimetres per year. The Passive Seismic Experiment detected moonquakes, proving the Moon was not entirely geologically dead.

Inside the cabin, once helmets were removed, the dust carried a faint smell — like spent gunpowder. It clung stubbornly to suits and equipment. We spoke of Michael Collins, orbiting alone in Columbia. As I sat there Buzz took a quick call from him. Without his flawless command module operations, there was no return. Collins described himself as "not lonely," but responsible. It was a trio, not a duo, that completed the mission.

After splashdown on July 24, 1969, the crew entered 21 days of quarantine in a Mobile Quarantine Facility — a converted Airstream trailer. NASA could not rule out lunar microbes. Caution ruled over celebration.

The Saturn V that launched them stood 110 metres tall and generated 7.5 million pounds of thrust at liftoff. Controlled violence. Precision engineering. More than 400,000 people worked across the United States to make it happen. President Kennedy's 1961 challenge — to land a man on the Moon and return him safely to Earth before the decade was out — had been met.

But sitting there listening, what stayed with me most was not rivalry, nor Cold War urgency, nor even technological triumph. It was awe! Buzz's measured confidence shows, Neil's quiet astonishment is legendary. Two different temperaments united by a moment when human beings crossed a threshold no species had crossed before. The footprints remain there still, undisturbed in silent dust. And in that quiet living room, the Moon did not feel distant at all.

**Leave a message or comments on this website Email me directly : www.davereneke@gmail.com

NB/ Please Include Your Name and Email address If You Require An Answer.

'ASTRO DAVE' RENEKE - A Personal Perspective

His extensive background includes teaching astronomy at the college level, being a featured speaker at astronomy conventions across Australia, and contributing as a science correspondent for both ABC and commercial radio stations. David's weekly radio interviews, reaching around 3 million listeners, cover the latest developments in astronomy and space exploration.

As a media personality, David's presence extends to regional, national, and international TV, with appearances on prominent platforms such as Good Morning America, American MSNBC news, the BBC, and Sky News in Australia. His own radio program has earned him major Australasian awards for outstanding service.

David is recognized for his engaging and unique style of presenting astronomy and space discovery, having entertained and educated large audiences throughout Australia. In addition to his presentations, he produces educational materials for beginners and runs a popular radio program in Hastings, NSW, with a substantial following and multiple awards for his radio presentations.

In 2004, David initiated the 'Astronomy Outreach' program, touring primary and secondary schools in NSW to provide an interactive astronomy and space education experience. Sponsored by Tasco Australia, Austar, and Discovery Science channel, the program donated telescopes and grants to schools during a special tour in 2009, contributing to the promotion of astronomy education in Australia. David Reneke, a highly regarded Australian amateur astronomer and lecturer with over 50 years of experience, has established himself as a prominent figure in the field of astronomy. With affiliations to leading global astronomical institutions,

David serves as the Editor for Australia's Astro-Space News Magazine and has previously held key editorial roles with Sky & Space Magazine and Australasian Science magazine. 

Heard on over 50 stations weekly