From spellbinding images to groundbreaking scientific discoveries, we look back on some of Hubble's most exciting milestones.

Enjoy dark skies for evening observing, then catch a meteor shower and a planetary conjunction in the morning sky this week.

In the years since, Hubble has gathered more than 1.6 million observations and 430 terabytes of data. The telescope has ...

Webb has two decades ahead of it, but it's already captured some stunning images. Here are 35 of our favorites.

"Polar orbit" means that instead of orbiting in the same plane as where the two stellar objects are located, the planet’s ...

This first full month of spring also presents a micromoon, a chance to see an iconic (if distant) galaxy, and a very frisky Jupiter ... The moon’s elliptical orbit means that its distance ...

Scott Bolton says he first dreamed of traveling through the galaxy when he was a boy camping out under the stars. Brent Humphreys Jupiter guards ... s team designed an elliptical orbit that ...