The asteroid will make a close approach to Earth just three days following its discovery.

NASA plans to launch its first nuclear-powered interplanetary spacecraft in 2028, a probe called Space Reactor-1 Freedom that will carry a fleet of tiny helicopters to Mars.

Fiber-optic cables on the moon could detect moonquakes, offering a simpler way to study lunar activity and support future Artemis missions.

NASA has released new Hubble telescope images of the Crab Nebula taken 25 years after the iconic observatory first gazed at the colorful cosmic crustacean.

Heat shields keep incoming spacecraft from burning up in planetary atmospheres. Now we're learning that different atmospheres have different effects.

Here's how to spot the Pleiades before they become lost in the glow of the setting sun.