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Asteroid rocks collected by NASA are wealthy in water and carbon : NPR

October 13, 2023
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Asteroid rocks collected by NASA are wealthy in water and carbon : NPR
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Small rocks and mud from an asteroid, exterior a spherical pattern assortment machine in a NASA lab.

Erika Blumenfeld & Joseph Aebersold/NASA


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Erika Blumenfeld & Joseph Aebersold/NASA


Small rocks and mud from an asteroid, exterior a spherical pattern assortment machine in a NASA lab.

Erika Blumenfeld & Joseph Aebersold/NASA

NASA has shared its first glimpse of the black rocks and mud introduced again from an asteroid, however the bulk of the fabric stays locked inside a pattern assortment machine that researchers have to slowly disassemble.

Nonetheless, the tiny quantity of fabric analyzed thus far exhibits that the asteroid, named Bennu, incorporates ample water and carbon, including to proof that asteroids might have seeded the early Earth with components wanted for the emergence of life.

“We’re already thrilled with the outcomes,” says Dante Lauretta, the principal investigator for NASA’s OSIRIS-REx mission, which despatched a spacecraft on a seven-year mission to Bennu and again.

In 2020, the spacecraft briefly tagged the floor of the asteroid, over 200 million miles from Earth, nabbing some rocks in a device known as the Contact-and-Go Pattern Acquisition Mechanism, or TAGSAM.

NASA effort to bring home asteroid rocks will end this weekend in triumph or a crash

The TAGSAM machine bought sealed up inside a canister, which returned to Earth final month in a capsule that parachuted right down to land in a Utah desert.

Staff rushed the canister to a particular lab arrange at NASA’s Johnson House Middle. There, employees opened it up within particular cupboards, so the pristine asteroid samples would not get contaminated with Earth stuff.

As soon as the canister was unsealed, researchers instantly noticed black asteroid mud and barely bigger particles. These bought despatched to labs for evaluation — and the outcomes have scientists excited.

“We’ve got verified that Bennu is dominated by water-bearing clay minerals,” says Lauretta.

What’s extra, he says, the pattern seems to be almost 5% carbon, which is a vital aspect for all times as we all know it.

“We picked the proper asteroid — and never solely that, we introduced again the proper pattern,” says Daniel Glavin of NASA’s Goddard House Flight Middle. “These things is an astrobiologist’s dream.”

NASA asteroid sample lands safely in Utah before being whisked away by helicopter

When the researchers eliminated the TAGSAM assortment machine from a locking mechanism that held it in place, they noticed extra mud and bigger rocks, a centimeter or so throughout, that had escaped via a Mylar flap.

All of these rocks should be painstakingly documented and picked up by curators within the astromaterials lab. However Lauretta says he was completely captivated by one picture displaying the bounty.

“I spent the weekend gazing this picture for hours and hours and getting extra excited by the day,” he stated at an occasion held in Houston to unveil footage of the asteroid pattern together with the primary scientific findings.

“Bennu has a salt-and-pepper sort of texture, vivid grains and darkish grains, and we’re seeing that,” says Lauretta. “Actually, as I used to be zooming round these pictures I felt like I used to be miniaturized and working round on a tiny little Bennu.”

Many of the rocks nabbed from Bennu are nonetheless unseen, nevertheless, as a result of they’re locked contained in the TAGSAM machine, which researchers should take aside methodically. So the analysis crew isn’t but certain precisely how a lot of the asteroid they introduced residence, though they suppose they bought about eight ounces.

“We’re optimistic that we’ll have a fairly good estimate of your complete mass of the pattern inside two weeks or so,” says Lauretta.

Requested if he had a favourite rock thus far, he stated that one within the picture had notably caught his fancy.

“It appears to be like fragile, friable, so it is delicate, probably,” says Lauretta. “You’ll be able to’t have a favourite little one, so all of them look wonderful, however that one I actually need to perceive what is going on on.”



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