Earth is our only example of a habitable planet, so it makes sense to search for Earth-size worlds when we're hunting for potentially-habitable exoplanets. When astronomers found seven of them ...

For all the talk about life across the cosmos, Earth remains the only confirmed example. That single data point makes your place in the universe feel both ordinary and strange. Two facts sharpen the ...

Trappist-1 is a fascinating exoplanetary system. Seven worlds orbiting a red dwarf star just 40 light-years away. All of the worlds are similar to Earth in mass and size, and three or four of them are ...

A young red dwarf can look calm from a distance. But buried in its light may be the chemical remains of a wrecked world. That is the picture emerging from a new analysis of stars in open clusters, ...

Somewhere between 50 and 200 million years ago, in three stellar nurseries not far from our corner of the Milky Way, at least six small red dwarf stars did something violent: they swallowed rocky ...