The head of planetary defense at the European Space Agency discusses 2024 YR4, an asteroid with a small chance of striking Earth eight years from now.

Dinosaurs are the extinct relatives of birds that roamed the lands and seas of ancient Earth. They first appeared around 240 ...

And the University of Hawaii has been selected to be a part of this history making adventure. Here are some facts to know: 1.

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.

YR4: everything to know about the potential "city killer" space rock that has a 2.3% chance of striking Earth on Dec. 22, 2032.

YR4 has a roughly 2 percent chance of hitting Earth in 2032, and “is large enough to cause localized damage,” NASA says.

NASA is monitoring three aircraft-sized asteroids that will zoom past the Earth later today at around 19,000 to 22,200 miles per hour.

Since the beginning of time, humans have looked up at the stars and dreamed of exploring the universe. Read more about it here: ...

He shared key facts about the asteroid with CBS News during the below conversation, which has been edited for clarity. This asteroid passes us by every four years. Every time we go four times ...