The threat from space rock 2024 YR4 has surpassed that of Apophis, an asteroid feared by scientists 20 years ago. The danger remains low, but experts are estimating the damage that could be done.

The controversy endures over Pluto's true status, but the solar system underdog continues to capture hearts across the globe.

Clyde Tombaugh discovered Pluto in 1930 at Lowell Observatory in Flagstaff. Here's how Pluto won - and lost - its planetary status.

Pluto may not be a planet any more, but you still have a chance to see the distant dwarf planet at one of Michigan's ...

The gas giant WASP 121b, also known as Tylos, has an atmospheric structure unlike any we have ever seen, and the fastest ...

Astronomers have peered through the atmosphere of a planet beyond the solar system, mapping its 3D structure for the first ...

“New Horizons shattered a major paradigm of planetary science,” says Alan Stern, the mission’s principal investigator. “Pluto ...

YR4 has a 1-in-43 chance of impacting the Earth in 2032, potentially causing localized damage and potentially wiping out a ...