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

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

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 ...

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.

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 ...

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

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.

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

While most NEOs are harmless, larger ones can cause significant damage, such as the 2013 Chelyabinsk meteor explosion over Russia that injured nearly 1,500 people. How would scientists know that ...

“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 ...