Discovery of a Perfect Planet
An Earth-like planet recently spotted outside our solar system is the first that atromomers have found that could support liquid water and harbor life.
Liquid water is what astronomers look for, and the newly found planet is located at the perfect distance from its sun—just the right distance so that the water on its surface doesn’t freeze or vaporize.
The new planet is about 50% bigger than Earth and about five times more massive. It’s called Gliese 581 C, after its star, Gliese 581, a small red dwarf star that is about one-third as massive as the Sun.