Japan asteroid probe finds 23 amino acids, researchers confirm

生命の源「アミノ酸」は宇宙から? はやぶさ2の“大発見”

Nikkei -- Jun 10
A total of 23 types of amino acids were found in asteroid samples brought back by Japan's Hayabusa2 space probe, according to new studies published in the journal Science and elsewhere, shedding further light on the origins of life on Earth.

Two teams -- one including researchers at Japan's Hokkaido University and Tokyo Institute of Technology, and another including researchers at Okayama University -- published two studies dated Friday.

Researchers in Japan and abroad have been analyzing the samples since they were recovered in late 2020. After sending the samples back to Earth, Hayabusa2 has gone on a mission to another asteroid.

Amino acids are the building blocks of proteins, which are essential to life. Those collected from the asteroid Ryugu include glutamic acid, which is responsible for the taste of umami, and valine, which cannot be synthesized by the human body, the researchers found.

Whether amino acids originated on Earth or arrived from space has been a topic of much scientific debate. The findings from Hayabusa2 appear to support the latter hypothesis. ...continue reading

Jun 10 (日テレNEWS) - 生命は一体どこからやってきたのか?。そんな大きすぎる謎に、日本の探査機「はやぶさ2」が一筋の光をもたらしました。小惑星「リュウグウ」から持ち帰った砂を分析した結果、生命のもととなる「アミノ酸」が発見されたのです。  ...continue reading

Sci-Tech Page: 1 | 2 | 3 | 4 | 5 | 6 | 7