There are secret planets hidden inside Solar Smash—and today we’re unlocking them all! From turning Earth into a frozen ice cube to triggering insane planetary destruction, each secret world requires ...

A huge solar storm struck Mars in 2024, supercharging its upper atmosphere and briefly disrupting spacecraft orbiting the Red Planet.

A study led by the University of Oxford has identified a new type of planet beyond our solar system—one that stores large amounts of sulfur deep within a permanent ocean of magma. The findings have ...

Astronomers have witnessed evidence of an extremely violent collision between planets, and it resembles the event in Earth's history that created the moon.

A hazy, ultra-light “super-puff” planet, Kepler-51d, is hiding its secrets and challenging how scientists understand planet formation.

Astronomers have discovered a bizarre exoplanet with a giant underground ocean of magma that traps sulphur and may represent an entirely new class of worlds.

The Sun's periods of rowdy activity may get all the glory, but even in its quieter times, our home star can subtly reshape its interior. According to a new analysis of decades' worth of data, the ...

On a frigid orbit beyond Neptune, some of the solar system’s smallest worlds project a strange silhouette. Two rounded lobes, pressed together with a narrow “neck,” like a snowman that never melted.

Add Yahoo as a preferred source to see more of our stories on Google. Kuiper Belt object 2014 MU69, informally known as Ultima Thule. New simulations suggest Kuiper Belt “snowman” objects can form ...

What Looked Like a Planet Was Actually a Massive Space Collision So, imagine astronomers are looking at something, thinking, ‘Wow, cool planet!’ Then, bam! Turns out it wasn’t a planet at all, but a ...