A daily update by email. Science news, great photos, sky alerts.
Sun news for May 21, 2024. Sun activity has been on the far side. The Earth-facing sun has shown only low activity.
Iguanas are formidable, armored reptiles that can change color and detach their tails. Plus, they have a third eye! All you need to know about iguanas, here.
Massive solar storms could damage the power grid, disrupt the internet, affect the ability of GPS and create auroras that reach toward the equator.
The Canadian zombie fires simmering below ground all winter are reigniting with spring. Some raging fires are sending smoke southward into the US.
In a first, a Sumatran orangutan treated his wound with a plant with known medicinal properties. Read more about this new doctor in the forest.
Meteor showers are unpredictable but nothing beats them for a fun and relaxing time under the stars. Here's 10 tips to maximize your meteor viewing time.
Have you seen Comet Pons-Brooks yet? If not, here are some beautiful images from our talented community of photographers. Enjoy them!
There are plenty of myths that surround the moon. Here are 5 of the most popular myths. How many of these myths have you been led to believe?
On this equinox, start tracking the sunset point on your western horizon. You'll see a mighty shift between now and the June solstice.
Will Betelgeuse have another period of noticeable dimming in 2024? Betelgeuse will explode as a supernova someday. When it does, it'll be visible in daylight.
Did you see the moon and Jupiter close together on March 13, 2024? Check out the images our talented photographers captured, including the Galilean moons!
Space junk jettisoned from the International Space Station in 2021 hit Earth on March 8, 2024. The space junk likely reentered over the Pacific Ocean.
A Texas wildfire is now the largest in the state's history. Plus, Oklahoma and Australia are also battling wildfires. See more here.
Venus and Mars were closest on February 21 and 22. Did you miss them? Don't worry, we compiled a gallery of EarthSky community photos, showing this cosmic duo.
This Valentine’s Day, we find so much to love in the many heart shapes right here on Earth or all the way to the deepest reaches of the sky.
Steven Bellavia caught before and after images of galaxy NGC 4216, which is currently hosting a new supernova. Learn how he did it here.
Sun activity archive for February 2024. A daily record of flaring, big filaments and prominences, and other sorts of activity, on our local star.
The brightest stars to the eye are 1st magnitude, and dimmest stars to the eye are 6th magnitude. How does stellar magnitude work in astronomy?
Cetus the Whale is a huge constellation that swims in a sea of stars near constellations named for a river and fish. And it contains a wonderful variable star.
Sun activity archive for December 2023. A daily record of flaring, big filaments and prominences, and other sorts of activity, on our local star.