Life Found On Ryugu Asteroid Sample, But It Looks Very Familiar HackadayJapan's priceless asteroid Ryugu sample got 'rapidly colonized' by Earth bacteria Space.comSamples of 'alien' asteroid Ryugu are crawling with life — from Earth Livescience.comRyugu asteroid sample rapidly colonized by terrestrial life despite strict contamination control Phys.orgRare Asteroid Sample Contaminated by Microorganisms Despite Scientists’ Best Efforts Gizmodo