TRAPPIST-1 Star System Contains Two Potentially Habitable Planets, New Study Suggests

It’s been less than a year since astronomers detected seven planets around TRAPPIST-1, a remarkable star system located 39 light years from Earth. New research suggests life could take root on at least two of these planets, thanks to a fortuitous orbital quirk. But other scientists aren’t so sure, saying TRAPPIST-1…

Our Universe Could Be Littered With Alien Viruses—and We Should Be Looking for Them

It’s generally agreed that some kind of microbe will be the first form of life we discover on another planet, moon, or other space rock. But hardly anyone thinks we’ll find an alien virus, which is weird, given how prolific and successful these biological entities are on Earth. A new study seeks to correct this…

Hubble Observations Suggest Water May Be Abundant on Outer TRAPPIST-1 Planets

From the moment that seven Earth-sized planets were discovered in orbit around TRAPPIST-1—an ultracool dwarf star located 39 light years away—astronomers have been busy trying to learn everything they can about this intriguing star system, particularly its potential to foster life. Recently, an international team of…