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 material withstands 58 percent more stress than diamonds, and could have "remarkable mechanical properties".

Photograph by NASA/Science Photo Library Asteroids often rotate, with their sunward side getting warmed up before spinning out of view. In the shade, they remit this heat, which acts like a ...

The closest of the asteroids to us—estimated to be about the size of a car—is whizzing through space at 27,358 miles per hour.

Stephen Hawking thought an asteroid impact posed the greatest threat to life on Earth.

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

Discovered in December, the near-Earth asteroid known as 2024 YR4 is estimated to be 130 feet to 300 feet across.

Asteroids are more than just space rocks—they come in many shapes, sizes, and compositions, with some even defying scientific ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. A recently ...

NASA issues alert for two asteroids passing Earth soon, highlighting the importance of asteroid tracking and planetary ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Seven years after ...