The 192nd asteroid discovered in the main belt is now at its best, located within a diamond shape of brighter field stars.

Jupiter’s largest moon, Ganymede, transits the gas giant’s disk this morning. Some part of the event, which lasts more than ...

Check out Astronomy’s latest product recommendations: The Edge of Space-Time by Chanda Prescod-Weinstein, the Seestar S30 Pro ...

Neptune reaches opposition this evening at 10 P.M. EDT, placing the planet at its best for viewing. However, with the nearly ...

The September Full Moon rules the skies this evening. Because it is the Full Moon closest to the equinox, it is called the ...

Rising around 7:30 P.M. local daylight time, Saturn reaches an altitude above 40° in the southeast by local midnight. Visible ...

The solar system’s most distant planet is now at opposition and looking its best. Search it out after dark using optical aid.

The bright, young star cluster M39 in Cygnus is a great target for any observer tonight, easy to catch in the eyepiece.

After 13 previous suborbital test flights, Starship finally reached orbit on test flight 14. SpaceX’s launch window opened at 8:15 a.m. EDT on Monday, Sept. 28, and the rocket cleared the tower at ...

A space rock struck the Moon in 2024, carving a 728-foot crater. Two new studies show how the impact reshaped the lunar ...

Born Sept. 27, 1918, and educated at Bradfield College and Oxford University in the U.K., Martin Ryle would go on to be the ...

Scientists once thought luminiferous ether pervaded the cosmos. Michelson and Morley’s ingenious experiment to find it ...