After many years of looking, astronomers have found a planet that is similar to Earth.
It’s Gliese 518g and it’s near a star. The astronomers think it has water and rock and the average temperature is between -31 C and -12 C. That’s cold, but not colder than Antarctica or the Arctic Circle, for example. Gliese 581g is bigger than the Earth and a year on Gliese518 is only 37 Earth days instead of 365. But astronomers do not think these are big differences and some of them think Gliese 581g will be a new Earth. However, Gliese 518g is twenty light years from Earth- a distance of 18 trillion km