Stephan's Quintet, discovered in 1877 by French astronomer Edouard Stephan in the constellation Pegasus, exemplifies the enhanced detail observable through larger astronomical apertures. The group ...

Celestron introduces the Moon Mission 100mm Tabletop Dobsonian, a 4-inch f/4 reflector telescope that includes two eyepieces, a finder scope, and a Moon filter, weighing 5.3 pounds with an optical ...

On November 25, Jupiter will be observable approximately 10° above the eastern horizon by 9 P.M. local time, positioned 7° south of Pollux and visible near Gemini's twin stars, Castor and Pollux.

Claude-Louis Mathieu, born in Macon, France, in 1783, demonstrated an early aptitude for mathematics, overcoming familial and financial obstacles to graduate from the Ecole Polytechnique in 1805. His ...

Dave Eicher, Editor Emeritus of *Astronomy* magazine, encourages observers to locate Saturn, the solar system's sixth planet, in the evening sky. During this observational period, Saturn's typically ...

The article details a celestial conjunction on November 24, 2025, where Mercury is visible 1.4° to Venus' upper left before sunrise, with Mercury requiring optical aid for clear identification. An ...

King Alfonso X "the Wise" (b. 1221) was a noted scholar who pioneered the translation of Arabic and Andalusian astronomical works into vernacular Castilian. His multicultural court was active in ...

Born Nov. 29, 1803, in Salzburg, Austria, Christian Doppler studied mathematics, physics, and astronomy at the University of Vienna. After struggling to secure an academic post and working as a ...

Apollo mission lunar samples provided crucial data, initially intended to test existing Moon formation theories (capture, co-formation, fission), but ultimately leading to the development of the Giant ...

Several planets, including Mercury, Mars, Venus, Uranus, Neptune, Saturn, and Jupiter, are visible this month. Saturn's moon Titan will cast its shadow on Saturn twice during July. Neptune will be ...

The Artemis program aims to return humans to the Moon using multiple vehicles from NASA and private companies like SpaceX and Blue Origin, contrasting with the Apollo program's single-rocket approach.

The Moon is about one-fourth the size of Earth. It's primarily composed of rock and minerals, with a small iron core. The Moon's average distance from Earth is roughly 239,000 miles. Lunar phases are ...