Born Sept. 27, 1918, and educated at Bradfield College and Oxford University in the U.K., Martin Ryle would go on to be 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 September Full Moon rules the skies this evening. Because it is the Full Moon closest to the equinox, it is called the ...

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 ...

The last two spacecraft of the European Space Agency’s (ESA) Cluster mission plunged into Earth’s atmosphere this week, closing out 26 years of research into the planet’s magnetic environment — and ...

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 ...

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

Neptune stands close to a slightly fainter background star this evening, offering a colorful contrast between the two. Just one day from opposition, Neptune rises around sunset and is 30° high in the ...

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

The bright Moon stands prominently in Aquarius the Water-bearer this evening, quickly waxing toward Full. Swing your scope up toward Earth’s lone satellite tonight and focus in on a point just east of ...