Astrobiologists in Germany are developing a new testing device that could help tease dormant alien microbes into revealing themselves — and its key ingredient is a common amino acid that’s found in ...

A Russian astronaut said extraterrestrial bacteria was found on the surface of the International Space Station. Anton Shkaplerov told Russian news outlet TASS Monday that it appeared the bacteria was ...

First NASA had quite possibly discovered an alien lifeform. Then it was an earth bacteria that has a unique kind of arsenic-based DNA - an entirely new kind of organism. Then it merely could use ...

WASHINGTON -- NASA and its top scientists are distancing themselves from a space agency researcher who concludes that he found alien bacterial life in meteorites that were collected many decades ago.