Mysterious gamma-ray burst is unlike any detected before

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Mysterious gamma-ray burst is unlike any detected before

Astronomers have spotted a mysterious gamma-ray burst that lasted for a day. This is by far the longest event we've seen of its kind. So what caused it?

EarthSky Voices

September 10, 2025

130 years of data on planetary nebula IC 418 puzzle scientists

Astronomers looked at 130 years’ worth of data on planetary nebula IC 418. They found its central star is heating up faster than any star ever observed.

Shireen Gonzaga

September 10, 2025

Cepheus the King: The constellation that looks like a house

The constellation Cepheus the King is visible from the Northern Hemisphere every night of the year due to its close location to Polaris, the North Star.

Kelly Kizer Whitt

September 10, 2025

Meet the snow leopard: the ghost of the mountains

The snow leopard is almost invisible in the snow. Its amazing camouflage has led people to call it the "ghost of the mountains."

Cristina Ortiz

September 8, 2025

Life around white dwarfs? Astronomers think it’s possible

An astronomer explores the possibility of life around white dwarfs, stars as small as Earth but far denser that may host habitable zones and planets with water.

EarthSky Voices

September 7, 2025

Interstellar comet 3I/ATLAS shows comet tail in new image

Astronomers captured images live from the Gemini South telescope control room in Chile, and they showed a comet tail for 3I/ATLAS.

EarthSky Voices

September 7, 2025

Saturn’s rings: Top tips for beginners

If you want to see Saturn's rings, September 2025 is a great time to look. Grab a telescope, find a dark sky and read the tips found here!

Editors of EarthSky

September 7, 2025

Mystery of fastest white dwarfs solved?

Astronomers have identified why the fastest white dwarfs in the Milky Way are so speedy. They are ejected by supernova explosions after 2 white dwarfs collide.

Paul Scott Anderson

September 7, 2025