Dhuri, Center for Space Science/N.Y.U.A.D. Supported by By Kenneth Chang A new global map of Mars offers a fresh perspective on the planet. The map, released earlier this month, was pieced ...

Kepler can tell us how big a planet is, but it doesn't know what the planet is made of. And planets in the "habitable zone" around stars could be consistent with anything from a blazing hell to a ...