On Jan. 31, 1958, Explorer 1 became the first satellite launched by the United States. Its primary science instrument, a ...

Following a massive cryovolcanic eruption, the mysterious Comet 29P/Schwassmann-Wachmann has been morphed into a giant spiral ...

Sky This Week is brought to you in part by Celestron. Friday, February 20Once the waxing Moon sets this evening, its ...

A distant star has just been caught in the act of destroying one of its own worlds, a violent finale astronomers have long predicted but never directly seen. The event offers a preview of the kind of ...

They show up as a mathematical solution in general relativity, basically as a time-reversed version of a black hole. Some ...

Scientists at Lawrence Livermore National Laboratory simulated one million satellite orbits in the vast stretch of space ...

A “ring of fire” solar eclipse will be visible on Tuesday, with the best views in Antarctica and partial eclipse views in Africa and South America.

Julian Marszalek dives into the multimedia project – book, film, soundtrack – celebrating a 5,000-year-old stone circle in ...

The annular solar eclipse will see the moon cover the majority of the solar disk, surrounding it in a fiery halo.

Learn why the Sun will appear as a brilliant ring of fire during the February 2026 solar eclipse. Discover the science behind ...

This time-lapse image of Venus and the Pleiades shows the tracks of SpaceX’s Starlink satellites. The image received an award in the 2021 IAU OAE Astrophotography Contest. (Torsten Hansen / IAU OAE / ...

Comet 29P/Schwassmann-Wachmann 1, a city-sized icy body that orbits the Sun at roughly 6 astronomical units, is known for sudden outbursts that can produce a glowing coma with a spiral, ...