These images mark an early milestone in the mission, confirming that OSIRIS-APEX is healthy and on course for its 2029 ...

Biggest vs smallest - how do we measure up in the grand scheme of the universe? Explore the fascinating scales of existence, from quantum particles to the observable universe’s edge. A journey into ...

A technique called interferometry can greatly magnify tiny objects on the sky, and is powerful enough to reveal the surfaces ...

The Moon is getting 1½ inches (3.8 centimeters) farther away from the Earth every year. Scientists measure the distance to ...

Small icy moons in the outer reaches of our solar system may hide boiling oceans underneath their surfaces, a new study finds.