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

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

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

By evening, the Moon has pulled a bit farther away — around 10 P.M. CDT, our satellite is more than 13° northeast of Saturn. The ringed planet is the brightest point of light in the eastern sky at ...

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

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

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

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

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

In a groundbreaking announcement, the U.S. Space Force stated publicly on Monday, Sept. 14, that it currently has on-orbit ...