Sign Up for Our Amazing Newsletter!
A daily update by email. Science news, great photos, sky alerts.
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
How many eclipses in 1 calendar year?
Every calendar year has at least 4, but 5, 6 or even 7 eclipses are also possible. Why don't we see them all?
February 10, 2017
Favorite photos from this weekend
The EarthSky community on Facebook outdid itself posting photos over the weekend of January 20-22, 2017. Thanks, everybody! Editors' picks here.
January 22, 2017
Vesta, brightest asteroid, brightest for 2017
If you've never spotted an asteroid, now would be a good time to try. Vesta's 2017 opposition is around now. Guy Ottewell provides charts and explains more.
January 16, 2017
See it! First full moon of 2017
In the Northern Hemisphere, the January full moon is sometimes known as the Wolf Moon. Howl at these awesome photos of the January's full moon from EarthSky friends around the world.
January 13, 2017
Moon in 2017
Everything you want to know about the moon in 2017 - including phases, cycles, eclipses and supermoons - from world-renowned astronomer Fred Espenak.
January 10, 2017
See it! Moon sweeps past Venus and Mars
As 2017 opens, the young moon is sweeping past dazzling Venus in the west after sunset. Mars is there, too, and, for those with optical aid, Neptune! Photos here.
January 3, 2017
Close and far moons in 2017
We list the 13 lunar perigees (close moons) and 13 lunar apogees (far moons) for the year 2017, plus share a secret on the intriguing cycle of close and far moons.
January 2, 2017
How to find Geminids’ radiant point
Best way to find the Geminid radiant is to see a meteor! Then trace its path backwards. But what if you want to find the radiant before seeing a meteor?
December 11, 2016
See it! Moon sweeps past Venus
The moon passed Venus Friday evening, but there's more to come. Wonderful photos here! Thanks to all who submitted. Keep watching this post for more photos.
December 4, 2016
How long to orbit Milky Way’s center?
One journey of our sun and planets around the center of our Milky Way galaxy is sometimes called a cosmic year. That's approximately 225-250 million Earth-years.
November 28, 2016
