YR4, which orbits the sun every four years and periodically crosses Earth's orbit. The nature of its orbit makes it a ...

New simulations reveal that the climate, atmospheric chemistry and even global photosynthesis would be dramatically disrupted by an asteroid collision ...

February, headlines around the world buzzed about the potential for an asteroid to hit the Earth in 2023—specifically, ...

Once, a very long time ago, a massive asteroid hit the Earth and wiped out the dinosaurs. In addition to functionally ...

YR4 became the highest-rated asteroid predicted to strike Earth, and although predictions for impact have lowered, not enough ...

The space rock, which measures 150 feet across and is traveling at 38,922 miles per hour, is one of five on NASA's radar.

YR4 has a very small chance of striking Earth when its orbit briefly intersects our planet's in December 2032.

It came from outer space! In the early morning of June 30, 1908, people in the remote Tunguska region of Siberia beheld an ...

Astronomers believe thousands of large undiscovered asteroids, that could cause regional damage, may be in space.

Chances an asteroid may hit Earth in 2032 have again risen, though the risk remains tiny, astronomers say. Here's what to ...

New observations of a small asteroid discovered in December have led astronomers to conclude that the chances of it striking ...