Celebrate International Moon Day with Starmus by sharing your best Moon images. Submit via Instagram DM for a chance to be ...

New findings about interstellar comet 3I/ATLAS reveal its surprising size, possible thick disk origin, and what makes it ...

The solar system’s smallest planet comes to a standstill in the evening sky before starting its retrograde motion for the next few weeks.

Today in the history of astronomy, an eclipse isn’t the only stunning thing in the sky.

Astronomers have detected the most massive black hole merger ever observed, challenging stellar evolution and black hole formation theories.

While astronomers have previously seen young discs that contain newborn, massive, Jupiter-like planets, McClure says, “we’ve always known that the first solid parts of planets, or planetesimals, must ...

At incredibly small scales, the universe operates according to the unfamiliar rules of quantum mechanics. And Planck’s ...

Spot the Broken Engagement Ring asterism near Merak in Ursa Major, easily viewed with binoculars or a low-power telescope.

Today in the history of astronomy, a star is captured in an astrophotography first.

Early birds can catch our satellite just 3° from two giant planets in Pisces: lovely ringed Saturn and far distant Neptune.

NWA 16788 is the largest martian meteorite ever found, weighing in at 54 pounds. Soon, it’ll be up for auction.

Jocelyn Bell Burnell is a British astrophysicist best known for her discovery of pulsars. In 1967, when she was a graduate ...