On the morning of Feb. 15, 2013, a meteor the size of a semitrailer shot out from the direction of the rising sun and exploded in a fireball over the city of Chelyabinsk, Russia. Briefly glowing ...

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This coming July, Venus could plow through the dust generated by an asteroid breakup thousands of years ago, potentially ...

Astronomers have recently discovered "planet killer" asteroids hiding in the glare of our sun, and one of them could one day impact Earth. A total of three asteroids were found and have been dubbed ...

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

Earth and other terrestrial planets probably use their gravitational forces to tear apart asteroids ― but this creates more streams of smaller asteroids. When you purchase through links on our site, ...

Hit-and-run collisions between embryonic planets during a critical period in the early history of the Solar System may account for some previously unexplained properties of planets, asteroids, and ...

After the sun finally dies, billions of years in the future, Earth too will meet a grisly end. There are several ways that our home planet may be destroyed after the sun dies, possibly being swallowed ...

In the glare of the sun, an unknown number of near-Earth asteroids move on unseen orbits. A new generation of space telescopes could be our best defense against potential disaster. When you purchase ...