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

The last major asteroid event in recent history was the 18m-wide meteorite that hit Chelyabinsk in Russia in 2013. The fireball turned night into day and released an estimated 500 kilotons of energy ...

And in 2013, a 20-meter-wide (66-foot-wide) asteroid entered Earth’s atmosphere over Chelyabinsk, Russia. It exploded in the ...

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

It measures 130 to 300 feet across, a pebble compared to the asteroid that killed the dinosaurs, which is estimated to have been six to nine miles in length. On the other hand, on Feb. 15, 2013, an ...

A massive 150-foot airplane-sized asteroid is set to pass Earth tomorrow, prompting NASA to issue a cautionary alert.

Another notable event involved the 2013 Chelyabinsk meteor, which was 66 feet in diameter. Chelyabinsk caused minimal damage to the area where it crash-landed, but its entry created an air burst.

Another notable event involved the 2013 Chelyabinsk meteor, which was 66 feet in diameter. Chelyabinsk caused minimal damage to the area where it crash-landed, but its entry created an air burst.

“Serpent Mound is the largest serpent effigy built anywhere on the planet Earth,” O’Grady said. “Serpent Mound is built up on ...

As new asteroids become detectable, scientists compute their orbits, which takes time and refinement based on new ...

Every newly discovered asteroid is just a point of light until measurements determine its size and, more importantly, where it's going ...