The head of planetary defense at the European Space Agency discusses 2024 YR4, an asteroid with a small chance of striking ...

A supposed square structure spotted on Mars sparked speculation about alien archeological sites on the red planet. It's a fun ...

The BlueWalker 3 satellite was fully deployed, making it the "largest-ever commercial communications array in low Earth orbit ...

A Mars image shows a strange square formation. Some think it's artificial, but experts suggest natural causes.

A newly discovered asteroid named 2024 YR4 now has a 2.2% chance of affecting Earth in 2032 after recent observations.

This 2023 satellite photo shows the heart-shaped Spirit Lake, which was transformed by the cataclysmic eruption of Mount St.

Scientists say the threat of a newly discovered asteroid has risen slightly in the past few weeks, as the world's telescopes ...

A perfectly square-shaped structure on Mars, 3 kilometers wide, spotted in NASA’s Mars Orbiter Camera images, has sparked ...

Scientists recently doubled the chances that Asteroid 2024 YR4 will hit Earth in 2032. While earlier estimates said the ...

NASA is making emergency preparations to deal with a ‘city-killing’ asteroid after the odds of it smashing into Earth ...