New Photos – Big Crater Blasted Into Asteroid By Japanese Probe

Earlier this month, the Hayabusa2 spacecraft used an explosive device to create an artificial crater on the Ryugu asteroid, but the probe couldn’t stick around to confirm the job for fear of being damaged by debris. 

Left: The surface before the explosion. Right: The crater left by the blast. (Image: JAXA)

The Japanese space agency has now confirmed the artificial crater — but it’s not exactly what they expected. Earlier today, while flying at an altitude of 1,700 meters above the Ryugu asteroid, the Hayabusa2 probe used its optical navigation camera (ONC-T) to confirm the presence of a surprisingly large artificial crater on the surface.

Given the rocky composition of the area, JAXA scientists were expecting something a bit smaller, so the exercise is already telling us something new about this asteroid and how it formed. On April 5, 2019, Hayabusa2 used an explosive device to blast a crater onto the surface of Ryugu. Images taken by the probe showed the explosive device, about the size of a baseball, slowly descending to the surface.

JAXA, fearful that the probe would be damaged by the ensuing debris, hid the probe behind the asteroid for about two weeks while the dust slowly settled in the low gravity environment. With Hayabusa2 out of harm’s way, however, JAXA was unable to confirm the presence of an artificial crater or its size.

To prove that Hayabusa2 got the job done, JAXA had the probe fly over the site from April 23 to 25. Images collected by the probe allowed the space agency to finally confirm the hole. It is “determined that the collision device generated a crater,” noted JAXA in a press release. With the crater now confirmed, Hayabusa2 is now returning back to its home position, approximately 12.4 miles (20 kilometers) above the surface.

A map of Ryugu, with the small red square, designated S01, the site of the artificial crater. (Image: JAXA)

“Creating an artificial crater with an impactor and observing it in detail afterwards is a world-first attempt,” said Hayabusa2 project manager Yuichi Tsuda while speaking to reporters earlier today, as reported by AFP. “This is a big success.” NASA’s Deep Impact blasted an artificial crater onto comet Tempel 1 on July 4, 2005. The difference in this case is that Hayabusa2 will now attempt to extract materials from within this new crater, whereas Deep Impact was only able to conduct observations.

Hayabusa2’s explosive device should have pulled up material from deeper within the asteroid, which will provide new insights into the formation of asteroids and other celestial objects in the Solar System. Earlier in the mission, the probe scooped up material from the very top of the asteroid’s surface. The probe is expected to return to Earth with its samples—both from the surface and subsurface—in late 2020.

Going into the mission, and after evaluating the target area on the surface, JAXA scientists expected an artificial crater between 2 and 3 meters. Unexpectedly, however, the new crater appears to be around 10 meters (nearly 10.06m) across, with the total affected area measuring around 20 meters wide. As noted in the AFP report, a loose, sandy surface was expected to produce a crater of that larger size, but the target region was rocky and littered with boulders. Source: Gizmodo

Read previous post:
Why Alien Life Now Seems Inevitable And Imminent

Extraterrestrial life, that familiar science-fiction trope, that kitschy fantasy, that...

The Closest Star Proxima Centauri Has A Planet In Habitable Zone.

In August of 2016, astronomers from the European Southern Observatory...

Why Haven’t We Met Any Other Forms Of Life Yet?

There are plenty of paranormal events in the universe which...