Astronomers have found a compact solar system whose planets line up in a way that, according to current models, should not be possible. Around the small star LHS 1903, a dense rocky world orbits on ...

Astronomers have found a rocky planet where it should not exist, orbiting far from a cool red star. Could this strange ...

Which solar system model is best? For as long as humans could look up at the night sky, we’ve been fascinated with the stars. How far away are they? Where did they come from? What secrets do they hide ...

In 2009, a pair of astronomers at the Paris Observatory announced a startling discovery. After building a detailed computational model of our solar system, they ran thousands of numerical simulations, ...