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Brightest Stars
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Astronomy Essentials
Mercury is up before sunrise and visible until mid-June
Editors of EarthSky
May 29, 2023
Astronomy Essentials
How is stellar magnitude used in astronomy?
Bruce McClure
May 28, 2023
Astronomy Essentials
Space
What’s a safe distance from a supernova for Earth?
Editors of EarthSky
May 26, 2023
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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
Visible planets and night sky for May and June 2023
May 26, 2023
Meteor shower guide: Next up the daytime the Arietids
May 9, 2023
Omega Centauri is the Milky Way’s largest star cluster
May 30, 2023
Mars and the Beehive! See them together on June 1 and 2
June 1, 2023
Venus in the daytime: How to see it in daylight
June 2, 2023
Full moon in June mimics path of December sun
June 2, 2023
Subscribe now! A daily update with Science news, great photos, sky alerts.
Your email address will only be used for EarthSky content.
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Astronomy Essentials
View All
Mercury is up before sunrise and visible until mid-June
Editors of EarthSky
May 29, 2023
How is stellar magnitude used in astronomy?
Bruce McClure
May 28, 2023
What’s a safe distance from a supernova for Earth?
Editors of EarthSky
May 26, 2023
Visible planets and night sky for May and June 2023
Marcy Curran
May 26, 2023
Brightest Stars
View All
Spica, the bright beacon of Virgo, is 2 stars
Deborah Byrd
May 11, 2023
Meet Regulus, the Lion’s Heart
Larry Sessions
May 9, 2023
Polaris – the North Star – is part of the Little Dipper
Bruce McClure
May 7, 2023
Arcturus, the brightest star of the northern sky
Deborah Byrd
May 3, 2023
Constellations
View All
Virgo the Maiden in northern spring skies
Bruce McClure
May 16, 2023
Coma Berenices: How Leo the Lion lost his tail
Larry Sessions
April 30, 2023
Crater the Cup sits upon Hydra’s back
Kelly Kizer Whitt
April 7, 2023
Leo the Lion and its backward question mark
Bruce McClure
April 2, 2023
Clusters Nebulae Galaxies
View All
The Coma Berenices galaxy cluster, best in April and May
Larry Sessions
April 13, 2023
Rho Ophiuchi is filled with glorious color
Kelly Kizer Whitt
March 16, 2023
The Beehive cluster: A swarm of 1,000 stars
Bruce McClure
March 15, 2023
Meet the Crab Nebula, remnant of an exploding star
Larry Sessions
January 15, 2023
Favorite Star Patterns
View All
How to see the Southern Cross from the Northern Hemisphere
Bruce McClure
April 28, 2023
The Big and Little Dipper: How to find them
Bruce McClure
March 23, 2023
Spring Triangle rises late at night, heralding the season
Scott Levine
March 19, 2023
How to find the Winter Hexagon or Winter Circle
Bruce McClure
January 19, 2023