Astronomers measure a star’s brightness using the apparent magnitude system, where lower values indicate brighter stars.

SiriusXM and Maxar Space Systems announced today that the SXM-9 satellite has completed in-orbit testing and is now fully ...

Greek astronomer Claudius Ptolemy, who lived in Egypt, built upon Babylonian knowledge in his geocentric model of the ...

Another year of skywatching is upon us, and there's a lot to look forward to in 2025!

A celestial event being hyped by some internet sites as an extremely rare planetary alignment has been oversold, astronomers are saying, but it should be a cool show if the sky is clear Saturday ...

Learn about Mars at opposition in January 2025, when the Red Planet is closest to Earth. Discover how to view it, key dates, ...

Discover the fascinating world of Egyptian zodiac signs, their meanings, and how they connect to ancient astrology. Unveil ...

The Wolf Moon will reach its peak fullness at 5:27 p.m. Eastern Time on January 13. It will rise in the sky about an hour ...