An arcsecond is a very small angle on the sky; the full moon is more than two million square arcseconds in area.) A decently dark site in a rural area has a sky background of about 21 mag/arcsec 2.

A truly dark night sky is getting harder and harder to find. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

How to Take Stunning Photos of Night Sky According to Award-Winning Astrophotographers Published Jul 31, 2021 at 4:00 AM EDT By Aristos Georgiou ...

There's more in the night sky than just the moon, stars and planets. The northern autumn is a great time to see galaxies and clusters in the deep night sky.

Find out what's up in your night sky during July 2025 and how to see it in this Space.com stargazing guide.

The prototype BlueWalker 3 satellite is now one of the brightest objects in the night sky. Astronomers are worried about even bigger, brighter satellites that are on the way.

According to Sky & Telescope, the eclipse will occur at around 8:17 p.m. EST. "This kind of occultations are very useful to constrain the shape of the asteroid involved," said Masi.

What To Watch For In The Night Sky This Week: August 29-September 4, 2022 This is a great week to watch the crescent Moon climb higher into the western sky during twilight. With each passing night ...