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Tonight

Mercury is up before sunrise and visible until mid-June
Watch for Mercury before sunup, the bright planet Jupiter will be nearby. Mercury reaches greatest elongation on May 29. It's best from the Southern Hemisphere.
Editors of EarthSky
May 29, 2023

Astronomy Essentials

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Mercury is up before sunrise and visible until mid-June
May 29, 2023
How is stellar magnitude used in astronomy?
May 28, 2023
What’s a safe distance from a supernova for Earth?
May 26, 2023
Visible planets and night sky for May and June 2023
May 26, 2023

Brightest Stars

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Spica, the bright beacon of Virgo, is 2 stars
May 11, 2023
Meet Regulus, the Lion’s Heart
May 9, 2023
Polaris – the North Star – is part of the Little Dipper
May 7, 2023
Arcturus, the brightest star of the northern sky
May 3, 2023

Constellations

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Virgo the Maiden in northern spring skies
May 16, 2023
Coma Berenices: How Leo the Lion lost his tail
April 30, 2023
Crater the Cup sits upon Hydra’s back
April 7, 2023
Leo the Lion and its backward question mark
April 2, 2023

Clusters Nebulae Galaxies

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The Coma Berenices galaxy cluster, best in April and May
April 13, 2023
Rho Ophiuchi is filled with glorious color
March 16, 2023
The Beehive cluster: A swarm of 1,000 stars
March 15, 2023
Meet the Crab Nebula, remnant of an exploding star
January 15, 2023

Favorite Star Patterns

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How to see the Southern Cross from the Northern Hemisphere
April 28, 2023
The Big and Little Dipper: How to find them
March 23, 2023
Spring Triangle rises late at night, heralding the season
March 19, 2023
How to find the Winter Hexagon or Winter Circle
January 19, 2023
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