Dec 9, 2024 · It’s back: Astronomy magazine’s free downloadable Sky Guide, your preview of everything happening in the sky next year. Mars opens 2025 by reaching opposition the night of Jan. 15/16, when it ...

May 28, 2024 · When we look up at the night sky, the dance of the planets is a constant, mesmerizing ballet. And occasionally, this dance creates patterns that spark both wonder and curiosity, as is the case ...

Nov 21, 2023 · The universe is a bizarre place. It’s packed full of mysterious alien planets, stars that dwarf the Sun, black holes of unfathomable power, and many other cosmic curiosities that seem to defy logic.

Your destination for the latest astronomy news on planets, stars, galaxies, cosmology, observing events, space missions, and more.

Astronomy.com is for anyone who wants to learn more about astronomy events, cosmology, planets, galaxies, asteroids, astrophotography, the Big Bang, black holes ...

Jan 23, 2024 · The speed of light is 299,792,458 meters per second and that constant tells us much about cause and effect in the universe.

Aug 30, 2023 · The Moon, Earth’s nearest celestial neighbor, has fascinated humanity for ages with its ever-changing phases. Each month, the Moon transitions through a series of distinct visual stages ...

Dec 17, 2024 · The winter solstice — the exact moment when the Sun appears farthest south in the sky — happens at 4:21 a.m. EST on Dec. 21 in 2024.

Nov 8, 2023 · An artist's impression of how a type Ia supernovae may look as revealed by spectro-polarimetric observations. The outer regions of the blast cloud is asymmetric, with different materials found in ...

Sep 1, 2024 · The author took this digital color image of the Andromeda Galaxy and its two main satellites with a 5-inch apochromatic refractor, Canon R mirrorless camera, and IDAS LPS 4 filter.