Astronomers have long speculated about an unseen planet lurking in the solar system's outer edge. This hypothetical world, ...

For years, astronomers have toyed with the idea that the Sun hides an extra planet so distant and dim that even the best ...

Researchers have found a candidate for the hypothetical Planet Nine, which could be an undiscovered giant planet way out in ...

MIT astronomers have discovered a planet some 140 light-years from Earth that is rapidly crumbling to pieces. The disintegrating world is about the mass of Mercury, although it circles about 20 times ...

You may like 'Earth to Space' art ... benefit of all humankind. — Planet Earth: Everything you need to know — Earth Day: What is it and why does it matter?

A new "Tatooine-like" planet outside the solar system may orbit ... DOGE, tariffs and executive orders: A look at President Trump's first 100 days Trump's first 100 days: Promises kept, broken ...

And these observations are giving us hints about what's going on? A new "Tatooine-like" planet outside the solar system may orbit two failed stars, scientists reported Wednesday.Related video ...

Visitors have dubbed it "magical" and "mystical," with some even claiming that it looks like something from another planet. Staffa's unique hexagonal rock columns, formed millions of years ago ...

“A fundamental question for planetary scientists is how Earth came to look like it does today. We now think that the material that built our planet–which we can study using these rare ...

What they have discovered recently, however, poses a more serious threat to planetary systems such as ours, and in turn, planets like Earth. A multi-planet system named HR 8799 has been the focus of ...

Allen ended up winning the battle, relegating McKenzie to the bullpen. On the surface, it didn't look like the worst thing in the world for the struggling McKenzie. Perhaps a trip to the bullpen ...