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EarthSky

EarthSky

The EarthSky team has a blast bringing you daily updates on your cosmos and world. We love your photos and welcome your news tips. Earth, Space, Human World, Tonight.

Which bird migrates the farthest?

By in Earth | 52 mins ago
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Over its lifetime of about 25 years, an Arctic tern can fly nearly 3 times the distance from the Earth to the moon.

Close-up on Cassiopeia the Queen

By in Tonight | 2 weeks ago
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The constellation Cassiopeia the Queen has the distinct shape of a W or M. Find her in the north-northeast sky on September and October evenings.

Why were prehistoric insects so big?

By in Earth | 2 weeks ago
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Before the dinosaurs, giant insects ruled the world.

Great Square of Pegasus points to Andromeda galaxy

By in Tonight | 3 weeks ago
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If your sky is dark, you’ll enjoy locating these stars and using this method of finding the Andromeda galaxy.

Surfer riding a rainbow

By in Today's Image | 4 weeks ago
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Photographer Josh Blash wrote: “I caught this surfer riding a rainbow after a storm moved off the New Hampshire coast last Wednesday.”

Orion and Sirius the Dog Star

By in Tonight | 4 weeks ago
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A sign of the changing season, Sirius – the sky’s brightest star – is visible before sunup. You’ll know it’s Sirius if the very noticeable 3 stars in Orion’s Belt point to it.

Today in science: A moon for Mars

By in Space | 1 month ago
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American astronomer Asaph Hall discovered Phobos, 1 of the 2 known Martian moons, on this date in 1877.

How to see a full circle rainbow

By in Earth | 2 months ago
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It’s possible to see the whole circle of a rainbow – but sky conditions have to be just right. Plus you have to be up high!

Amazing Kilauea volcano imagery you might have missed

By in Earth | Human World | 2 months ago
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For more than 2 months, lava has been pouring from Hawaii’s Kilauea volcano, destroying homes and remaking the land. A compilation of photos and videos, here.

See the constellation Scutum the Shield

By in Tonight | 2 months ago
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Scutum has only has 4 stars that make up the constellation outline, but it’s noticeable in a dark sky because a rich region of the Milky Way is behind it.