Eight Newly Found Exoplanets Look to Be "Just Right"

Astronomers are discovering exoplanets--worlds orbiting other stars--all the time, but eight new ones recently found are more exciting: They are roughly the size of Earth, and all orbit in their stars' habitable zones (the distance where conditions are good for liquid water on a planet's surface). Two in particular are pretty close to having potentially Earth-like conditions, which is very interesting indeed. The planets were all first found using NASA's Kepler space telescope. Kepler has been l...