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.

NASA has just made a groundbreaking discovery—a new planet beyond Neptune that wasn’t there before! This mysterious find ...

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

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

According to a recent YouGov poll, 35% of Americans think Pluto is not a planet. But they are all wrong—kind of. To get to the bottom of whether Pluto is a planet, I tracked down planetary scientist ...

Towards the end of the month, Mercury appears in the evening sky, and climbs up past Saturn. In the dusk glow, you may be ...

Missing planets? That literally happens all the time IRL. Here's why the Star Wars trope of incomplete star maps and missing ...

If you have ever wondered about the stars or the planets that are a part of our solar system, then you may be interested in ...

WASP-121b is like nothing in the solar system, raining liquid metal and being puffy like a marshmallow. The origins of these ...

you can detect the color of the planet but not much else. Neptune needs a telescope to be viewed and it is worth seeing its deep blue color. Pluto is way out there in the solar system and requires ...