The Andromeda galaxy is the closest big galaxy to our Milky Way. At 2.5 million light-years, it's the most distant thing you can see with the eye alone.

Bruce McClure

August 24, 2021

Sun-Regulus in conjunction August 23

Sun-Regulus in conjunction August 23, 2021. But you won't see Regulus around this time. It travels across the sky with the sun in the daytime.

Bruce McClure

August 22, 2021

We’ll have a Blue Moon this weekend

The 2nd of 2 full moons in a calendar month? Or 3rd of 4 full moons in a single season? How can both of them be a Blue Moon?

Bruce McClure

Deborah Byrd

August 19, 2021

Blue Moon, Saturn, Jupiter August 19 to 22

Blue Moon, Saturn, Jupiter visible near one another this upcoming weekend, August 19 to 22, 2021. Watch for these worlds in your sky.

Bruce McClure

August 19, 2021

2021’s closest planetary conjunction is August 19

2021’s closest planetary conjunction favors Southern Hemisphere The closest conjunction of two planets for 2021 happens on August 19 at...

Bruce McClure

August 18, 2021

Capricornus? Here’s your constellation

Capricornus the Sea-goat can be spotted in September and October formed by stars that take the shape of an arrowhead. One Messier object, M30, is found within.

Bruce McClure

Kelly Kizer Whitt

August 18, 2021

Born under the sign of Ophiuchus?

Born between November 29 and December 18? Then the sun passes in front of Ophiuchus on your birthday. Here's how to spot Ophiuchus in the sky.

Bruce McClure

August 16, 2021

Bruce McClure

Bruce McClure has served as lead writer for EarthSky's popular Tonight pages since 2004. He's a sundial aficionado, whose love for the heavens has taken him to Lake Titicaca in Bolivia and sailing in the North Atlantic, where he earned his celestial navigation certificate through the School of Ocean Sailing and Navigation. He also writes and hosts public astronomy programs and planetarium programs in and around his home in upstate New York.