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 ...

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." ...

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.