New Evidence Reveals What a "Typical" Solar System Looks Like

Prior to the discovery of exoplanets, astronomers assumed that our solar system's configuration was typical. But now, some 1,715 exoplanets later, we know that we're far from ordinary. So what passes for "normal" in the annals of solar systems? Here's what we know now. » 4/28/14 12:00pm 4/28/14 12:00pm

Astronomers find a freakishly compact solar system with seven planets

In what appears to be a record, two different teams of astronomers have confirmed the existence of a seventh planet orbiting a dwarf star 2,500 light-years away. And incredibly, all seven planets are caught in a tight orbit closer than the Earth's distance to the Sun. » 10/25/13 2:40pm 10/25/13 2:40pm

Earth-sized planets might be a dime a dozen

A new study estimates that one in four sun-like stars have Earth-sized planets — far more than previously thought. It challenges current theories on how planets form, and may mean a greater chance of finding habitable worlds. » 10/29/10 2:00pm 10/29/10 2:00pm