Forty light-years away, seven Earth-sized planets orbit around a dim red dwarf star in one of the most tightly packed ...

While late M-stars are the easiest places to find Earth-sized planets, a new study suggests they are biological dead ends where animal life may never find enough fuel to evolve.

Could the system of seven Earth-size planets 40 light-years away host ETs? Some researchers argue they could some day, if they don't already. Eric Mack has been a CNET contributor since 2011. Eric and ...

In a blow to anyone dreaming that complex life may exist elsewhere in the universe, a new study suggests we're unlikely to ...

TRAPPIST-1 is one of the most fascinating planetary systems discovered so far. Located just 40 light-years away, seven roughly Earth-sized planets are orbiting a red dwarf star, with three of them ...

This artist's concept shows what the TRAPPIST-1 planetary system may look like. TRAPPIST-1 fascinates planetary scientists. Just 39 light-years from us exist seven planets orbiting a star. It’s not an ...

The TRAPPIST-1 solar system, depicted in this artist's impression, might harbor Earth clones with oceans and rich atmospheres. (Photo digital Illustration by NASA/NASA via Getty Images) A young ...

TRAPPIST-1 just reminded us, again, that space is unforgiving. Last year, a team of astronomers used JWST to measure the starlight shining around the edges of TRAPPIST-1b as the rocky little planet ...

Astronomers have discovered seven roughly Earth-size planets very close to a cool dwarf star some 39 light-years from Earth, including three orbiting in the star’s habitable zone where liquid water, a ...

A second exoplanet in the TRAPPIST-1 system turns out to have no atmosphere, according to recent data from the James Webb Space Telescope (JWST), and that could be bad news for the search for life in ...