For centuries, humans have gazed at the stars, trying to understand what lies beyond the familiar planets we know. From Mercury’s blazing orbit near the Sun to Neptune’s icy edge, our Solar System has ...

A Sanjay Limaye, planetary scientist at the Space Science and Engineering Center, University of Wisconsin-Madison: There are many, many objects beyond Pluto, but where they came from and when they ...

A team of astronomers from Taiwan has uncovered promising evidence suggesting the existence of Planet 9, a hypothesized planet beyond Pluto in the far reaches of our Solar System. This new potential ...