Getty Images, photo by Handout

Three new planets have been discovered by astronomers that are close to Earth-size and are the right distance from their sun to make the temperature similar to Earth’s. The planets were discovered in what scientists call the ‘habitable zone’ where the surface of the planet isn’t too hot or too cold.

One planet is 70% bigger than Earth and that’s being called "super-sized Earth"; the other two are much closer to the size of Earth and are circling a star called Kepler-62. The Kepler telescope is used to search space for Earth-size planets that are similar in distance from their sun as we are to ours. The whole mission of the Kepler project is to see if Earth has a twin and if life does exist in the Universe.