English Cassini–Huygens Cited by user Hairy Dude on 31 Dec 2023 Cassini–Huygens, commonly called Cassini, was a space-research mission by NASA, the European Space Agency (ESA), and the Italian Space Agency (ASI) to send a space probe…
English Rare Earth hypothesis Cited by user EvenGreenerFish on 13 Sep 2015 According to the hypothesis, complex extraterrestrial life is an improbable phenomenon and likely to be rare.