Barnard's Star is a small, dim star, of the type that astronomers call red dwarfs. Consequently, even though it is one of the ...

allowing its size and orbit to be discerned. Thanks to this method, we have discovered many planets in orbit around certain stars. Trappist-1, a red dwarf star located 40 light-years from Earth ...

Around the distant star TRAPPIST-1, seven rocky, Earth-size planets swirl through the ... is a mere toddler in cosmic terms. (The sun, by comparison, is 4.6 billion years old.) ...