Add Yahoo as a preferred source to see more of our stories on Google. Six of the planets of the Solar System are about to line up for a rare sight in Earth's sky. It's not uncommon for several planets ...

Want to catch a glimpse of the planetary alignment from Arizona? Here's what to know, including a list of official dark sky locations in the state.

NASA’s Kepler mission has verified 1,284 new planets – the single largest finding of planets to date. “This announcement more than doubles the number of confirmed planets from Kepler,” said Ellen ...