YR4 has a 2% chance of hitting Earth in 2032. Astronomers are tracking it to refine estimates of its size and orbit to see how much of a risk the space rock poses.

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 ...

The neutrino was 30 times more energetic than any other previously observed particle of its kind. Scientists still don’t know ...

There seems to be too much of a radioactive element in rocks deep in the Pacific Ocean – how did it get there 10 million ...

Planetary Society Chief Scientist Bruce Betts notes while counterintuitive, the odds of impact go up before they drop to zero.

On the world's first Asteroid Day, Nina Burleigh discovers that Nasa has already commissioned a team of 'planetary defenders' ...

Gaining insight could help understand the timing and process of life's emergence. A research team led by a Rutgers-New ...

Right here on Earth are some outstanding examples of meteorite and asteroid impact craters and other visible impact ...

Even the smallest odds of an impact sound alarming, but scientists’ ability to calculate them is actually good news.

Over the next several weeks, astronomers will be looking closely at an asteroid called 2024 YR4 that could be as big as a ...

So while the odds have doubled, astronomers aren't too worried. When 2024 YR 4 had a risk of less than 1%, NASA's Planetary ...

New research on meteorites may finally hold the answers to why Earth and Mars suffer from a mysterious absence of specific ...