For decades, we believed there were nine planets in our solar system—until Pluto was reclassified in 2006. But what if ...

The threat of a newly discovered asteroid has risen slightly in the past few weeks, as the world's telescopes rush to track its course. But the chance of an impact is still quite slim.

Monroeville Public Library is holding a three-part children’s series on space, where participants learn fun facts about the ...

Look up this week for February’s full snow moon and to catch the last glimpse of a visible parade of planets in the night sky ...

This is the last time the seven planets will appear together in the night sky until 2040. Here's when it's happening – and ...

Two winter weather systems are set to impact the St. Louis metropolitan area this week, with the second system on Wednesday ...

NASA has been monitoring a never-before-seen planet in its solar system, which is eight times the size of Earth.