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The April 8 eclipse is part of Saros 139. What does that mean?
Enjoy the April 8 eclipse as you witness the 30th of 71 member eclipses in the illustrious procession known as Saros 139. Learn more here.
February 8, 2024
How far is Betelgeuse, the famous red supergiant star?
Betelgeuse is bright and it's exciting because one day it will explode - but how far away is it, really? Astronomers aren't sure.
January 26, 2024
1st of 5 new supermoons in a row starting today
We will have 5 new supermoons in a row, starting on January 11, 2024. The April 8, 2924, new supermoon will result in the April 8, 2024, total solar eclipse!
January 11, 2024
The meridian: When does the sun cross it?
In the jargon of astronomers, the sun is said to make an upper meridian transit when it reaches its highest point for the day at solar noon (midday).
January 2, 2024
What is a penumbral eclipse of the moon?
There are 3 kinds of lunar eclipses: total, partial and penumbral. A penumbral eclipse is very subtle. You can notice a shading on the moon's face.
January 1, 2024
Geminid meteor shower 2023: Cool photos!
See the best photos of the Geminid meteor shower of 2023 from our talented community of photographers, from all over the world.
December 15, 2023
10 tips for watching the Geminids in 2023
The Geminids make up a rich and much-loved annual meteor shower that peaks in mid-December. Here are 10 tips for watching the Geminids in 2023.
December 13, 2023
What are red giants? Our sun will become one!
What are red giants? Most main-sequence stars, like our sun, will become one. Red giants swell to such a large size they can swallow their inner planets.
November 9, 2023
How big are asteroids? Compare sizes in this video
How big are asteroids? This video shows the sizes of 22 asteroids - ranging from tiny to vast - in comparison to New York City.
November 3, 2023
Some will see a partial lunar eclipse tonight
A shallow partial lunar eclipse takes place on October 28, 2023, visible in Europe, Africa, most of Asia and western Australia. Jupiter is the bright object nearby. Maps and details here.
October 28, 2023
