The X-Men were the biggest superheroes of the ’90s. Uncanny X-Men, X-Men, Wolverine, and at times X-Force were all top ten ...

For the dwarf planet candidate, one trip around the sun takes over 24,000 years. Its orbit challenges a proposed path for a hypothetical Planet Nine.

Some scientists hypothesize that a mysterious, gigantic 9th planet may be lurking at our solar system’s edge. Why haven't we ...

Shares of Planet Labs ( PL 11.24%) climbed on Thursday, closing up 11.2% as of the 1 p.m. ET early market close for the ...

Planet X, also called Planet Nine, is a hypothetical planetary body seven times the mass of Earth lurking behind Pluto. If found, this gassy, icy beast some 155 billion miles away from the Sun ...

Scientists may have discovered a dwarf planet far beyond Neptune — an unearthing that may disprove a longstanding theory ...

Cities have a central role to play tackling climate change. They contribute 67%–72% of the greenhouse gas emissions which are ...

To get a glimpse of the “Swift Planet,” EarthSky suggests waiting for the sun to set before looking west for the planet ...

The planet, which astronomers believe is orbiting a young red dwarf star approximately 34 light years away, has been dubbed ...

New research shows there is at least a 40% chance of the existence of Planet Nine, but scientists are still looking for definitive proof.

Charles Leclerc let fly an untelevised, X-rated radio rant after qualifying in sixth for the British Grand Prix.