On June 27, the mountain-size asteroid 2011 UL21 will come within 5 million miles of Earth, making it one of the largest space rocks to come that close to our planet for 125 years. Here's how to ...

Mount Everest is the highest mountain as measured from sea level. ... are one of the fastest rising systems of rocks on the planet," Butler said. This is because of a principle called isostasy.

NASA's Perseverance Mars rover found a 'one-of-a-kind treasure' on the rim of Jezero Crater, a rock that could help reveal the ancient history of the Red Planet.

This week, NASA announced that the robotic explorer picked up a "one-of-a-kind treasure" in the form of a 1.1-inch (2.9-centimeter) rock sample from an area known as "Silver Mountain." ...