NASA's IR space scope explores the Milky Way’s most prolific star-forming region, cracking open new secrets of how stars form ...

Their new study shows that Earth’s massive drop in temperature after the dinosaurs went extinct could have been caused by a large drop in calcium levels in the ocean. The study showed that the ...

The Moon passes 4° north of Jupiter at 9 P.M. EST. The pair shares the central regions of Gemini this evening, with the Moon appearing to the upper left of Jupiter, and framed on the left by the Twins ...

If you were to take a random blob of gas and heat it to solar temperatures (roughly 10,000 degrees Fahrenheit [5,500 degrees Celsius] at the surface or over 27 million F [15 million C] in the core), ...

Russell W. Porter had a fascination with telescope-making that proved contagious: When he moved to Springfield, Vermont, in 1919, many townsfolk quickly became interested in his hobby, prompting ...

2026 is lining up to be a great year for skywatchers. Our comprehensive guide, curated by Astronomy‘s observing experts, lists everything you need to know to catch eclipses, meteor showers, planetary ...

Although the Moon is growing brighter, there’s still plenty to see in the evening sky. Astronomy contributor Phil Harrington calls the shape formed by the bright stars Betelgeuse, Sirius, and Procyon ...

There’s plenty to view in the early-morning sky, especially with no Moon visible before dawn. Although anchored by the bright star Arcturus, the constellation Boötes is relatively devoid of bright ...

The September 2025 issue featured “A guide to beginner’s guides,” a reminiscence and description of some the books for astronomy beginners that Contributing Editor Raymond Shubinski recommends or ...

Albert Einstein’s theory of general relativity is just over 100 years old, and so far it has predicted the interaction between celestial objects and the space-time field very well. There are a few ...