日本「隼鸟2号」（Hayabusa 2）探索任务带回地球的「龙宫」小行星（162173 Ryugu）样本，被发现送到地球后就充满了地球生命体。研究人员指出，这表明地球微生物惊人的殖民能力，甚至连外星物质也被征服。

See multiple views from the Hayabusa2 spacecraft's touching down on asteroid 162173 Ryugu. Credit: JAXA/U. Tokyo/Kochi ...

In June 2018, Japan's Hayabusa 2 mission reached asteroid 162173 Ryugu. It studied the asteroid for about 15 months, deploying small rovers and a lander, before gathering a sample and returning it ...

Hayabusa-2 reached the asteroid Ryugu in June this year after a three-and-a-half-year journey. The 1km-wide space rock known formally as 162173 Ryugu belongs to a particularly primitive type of ...

Last year, researchers excitedly announced that they had found two organic compounds essential for living organisms in ...

Researchers studied tiny asteroid fragments from Ryugu, revealing that it originated in the outer solar system and evolved ...

Microscope image of one of the small fragments of asteroid 162173 Ryugu studied by scientists at the Advanced Photon Source. This fragment is roughly 400 microns in diameter, or about the width of ...

Snapping a series of pictures that revealed the asteroid’s shape. The asteroid of choice was 162173 Ryugu, or Ryugu for short. In Japanese it refers to a magical, underwater Dragon Palace.

Scientists have found microorganisms crawling over a sample retrieved from the 200 million-mile-distant asteroid Ryugu. But ...