Astronomers have mapped the 3D structure of an alien planet's atmosphere for the first time, revealing a layered system of extreme winds.

A star racing through the Milky Way may have a planet in tow, setting a new speed record for exoplanet systems. Using microlensing, astronomers spotted the pair moving at over 1.2 million mph.

A massive 120-foot asteroid, named 2025 CY3, is set to make a close approach to Earth this weekend. Hurtling through space at ...

The potentially hazardous asteroid 2024 YR4 caused consternation over the last few weeks as its odds of hitting Earth in 2032 dramatically rose. Now, those odds have plummeted to near-zero, as ...

Deadly drownings of animals in water canals for irrigation and other purposes have been observed in various countries. The ...

The likelihood of 2024 YR4 colliding with the our planet in 2032 have ticked up to over 3 percent. Is it time to start ...

YR4 has grabbed headlines lately, after NASA calculated a 1-in-32 chance of an impact in 2032 – the highest chance ever for ...

YR4 has a 2.8% to 3.1% chance of hitting Earth in 2032. Astronomers are tracking it to refine estimates of its size and orbit ...

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

Sure, they’re particles and rocks, but they’re still a fascinatingly long way from home. Alpha Centauri is the star system ...

Chinese scientists have been continuously observing an asteroid that may collide with Earth in 2032 since early January, ...

Two weeks ago, when Ars first wrote about the asteroid, designated 2024 YR4, NASA's Center for Near Earth Object Studies ...