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

Chilling animations depict the apocalyptic impact that “city-killer” asteroid YR4 2024 could have if it did hit Earth — while astronomers warn that the moon could be in the line of fire as well.

The 2024 YR4 asteroid, which is nearly the size of a football field, now has roughly a 0.004% chance of hitting Earth in ...

A White House science advisor recently war-gamed with space agency heads worldwide to devise a planet-saving defense to an ...

The rock tour has officially been canceled. After two months of observations, NASA scientists have officially declared Earth ...

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

An asteroid between about 130 and 300 ft. (40 and 90 meters) in diameter has been given a 2.3% chance of it hitting Earth on Dec. 22, 2032. Here’s what would happen if it hits — and why using ...

An asteroid will whiz harmlessly past Earth Saturday ... thermal radiation that can set fire to surrounding environment and tsunami waves for impacts in the ocean.” Long-term effects could ...

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