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Home Lead Story Japan's Hayabusa2 Spacecraft Drops Explosive Design to Make Crater on Asteroid

Japan’s Hayabusa2 Spacecraft Drops Explosive Design to Make Crater on Asteroid

Friday's crater mission is the riskiest for Hayabusa2, as it had to immediately get away so it won't get hit by flying shards from the blast

Japan’s space agency said its Hayabusa2 spacecraft successfully dropped an explosive designed to make a crater on an asteroid and collect its underground samples to find possible clues to the origin of the solar system.

Friday’s crater mission is the riskiest for Hayabusa2, as it had to immediately get away so it won’t get hit by flying shards from the blast.

The Japan Aerospace Exploration Agency, or JAXA, said that Hayabusa2 dropped a “small carry-on impactor” made of copper onto the asteroid Friday morning, and that data confirmed the spacecraft safely evacuated and remained intact. JAXA is analyzing data to examine if or how the impactor made a crater.

hayabusa2 spacecraft, japan
This computer graphics image provided by the Japan Aerospace Exploration Agency (JAXA) shows an asteroid and asteroid explorer Hayabusa2. VOA

The copper explosive is the size of a baseball weighing 2 kilograms (4.4 pounds). It was designed to come out of a cone-shaped piece of equipment. A copper plate on its bottom was to turn into a ball during its descent and slam into the asteroid at 2 kilometers (1.2 miles) per second.

JAXA plans to send Hayabusa2 back to the site later, when the dust and debris settle, for observations from above and to collect samples from underground that have not been exposed to the sun or space rays. Scientists hope the samples will be crucial to determine the history of the asteroid and our planet.

If successful, it would be the first time for a spacecraft to take such materials. In a 2005 “deep impact” mission to a comet, NASA observed fragments after blasting the surface but did not collect them.

After dropping the impactor, the spacecraft was to move quickly to the other side of the asteroid to avoid flying shards from the blast. While moving away, Hayabusa2 also left a camera to capture the outcome. One of its first photos showed the impactor being successfully released and headed to the asteroid.

Japan, hayabusa2 spacecraft
FILE – In this Feb. 22, 2019, file photo, this image released by the Japan Aerospace Exploration Agency (JAXA) shows the shadow, center above, of the Hayabusa2 spacecraft after its successful touchdown on the asteroid Ryugu. VOA

“So far, Hayabusa2 has done everything as planned, and we are delighted,” said mission leader Makoto Yoshikawa. “But we still have more missions to achieve and it’s too early for us to celebrate with ‘banzai.”

ALSO READ: NASA Wants Humans To Reach Mars By 2033

Hayabusa2 successfully touched down on a tiny flat surface on the boulder-rich asteroid in February, when the spacecraft also collected some surface dust and small debris. The craft is scheduled to leave the asteroid at the end of 2019 and bring surface fragments and underground samples back to Earth in late 2020.

The asteroid, named Ryugu after an undersea palace in a Japanese folktale, is about 300 million kilometers (180 million miles) from Earth. (VOA)

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