The TRAPPIST-1 system is a science-fiction writer's dream. Seven Earth-sized worlds orbit a red dwarf star just 40 light-years away. Three of those worlds are within the habitable zone of the star.

Scientists from the SETI Institute and Penn State University have completed the most thorough search for alien radio signals ...

The habitable zone for complex ... This narrower zone excludes many exoplanets including Proxima Centauri b and TRAPPIST-1 planets e, f and g (black dots). Disclaimer: AAAS and EurekAlert!

In almost all accepted studies, both Earth and Mars lie firmly within the Sun’s habitable zone.) Initial observations and measurements of the TRAPPIST-1 system from Spitzer allowed scientists to ...

This 2018 artist's concept shows what the TRAPPIST-1 planetary system may look like, based on available data about the planets' diameters, masses and distances from the host star (far left).

A solar system 39 light years from Earth with seven ... Three of the seven planets live in the habitable zone, where liquid water can exist on large scales — think vast, deep oceans like on ...

The TRAPPIST-1 system, fascinating with its seven Earth-sized rocky planets, three of which are located in the habitable zone, represents a unique opportunity to study the atmospheres of exoplanets.