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Earth
Sharks may be hunting other sharks
Researchers uncovered a rare instance of large sharks preying on one another. The finding shows the complexity of shark interactions and resulting impacts.
September 8, 2024
Astronomy Essentials
Tonight
Visible planets and night sky guide for September
Visible planets and night sky guide for September 2024. Mercury and Regulus pair up in the morning sky. Look about 40 minutes before sunrise.
Space
Moon’s volcanoes were erupting only 120 million years ago
Scientists in China, studying samples brought back by the Chang’e-5 mission, say that the moon's volcanoes were active as recently as 120 million years ago.
September 8, 2024
Astronomy Essentials
What does opposition mean for an outer planet?
Opposition is when Earth passes directly between the sun and an outer planet, placing the outer planet on the opposite side of the sky from the sun.
September 8, 2024
Sun
Sun news September 8: A dark filament eruption
Sun news for September 8: The sun is calm today. The size and number of flares is down from previous days. We did see a cool and dark filament eruption.
September 8, 2024
Astronomy Essentials
Saturn at opposition – brightest for 2024 – on September 8
Don't miss Saturn at opposition on and around the night of September 8, 2024. That's when our planet Earth passes between the sun and Saturn.
September 7, 2024
Human World
Spaceflight
Ailing Starliner spacecraft returns to Earth sans crew
Boeing's Starliner capsule landed safely - without its crew - on Friday night. The 2 astronauts are still stuck aboard the ISS, slated to return in February.
September 7, 2024
Space
How asteroid Phaethon can spawn the Geminid meteors
Phaethon is a weird asteroid that behaves like a comet. It's also responsible for the Geminid meteor shower. Find out how it does so, here.
September 6, 2024
Today's Image
Deep-sky photos for August 2024: Editor’s picks
Enjoy this gallery of deep-sky photos for August 2024 from our EarthSky community. If you have a great photo to share, send it in too. We love to see them!
September 6, 2024
Earth
Earth’s core has a huge, hidden donut shape
Scientists in Australia have discovered a huge donut-shaped region in Earth's core. The finding provides new clues about the dynamics of Earth's magnetic field.
September 6, 2024
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