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Supermassive black holes in all galaxies? Maybe not
A new study looked at 1,600 galaxies and found that the cores of small galaxies are less likely to be home to supermassive black holes.
January 6, 2026
Scientists extract ancient air from rock-salt time capsule
Scientists extracted ancient air from 1.4-billion-year-old halite crystals. It contained higher atmospheric oxygen and carbon dioxide levels than expected.
January 4, 2026
January birthstone: The colorful garnet
Garnets, the beautiful January birthstone, are often thought to be red gemstones. But they also come in yellow, green, orange, brown and black.
January 4, 2026
Atmosphere on lava planet is an exciting surprise
Astronomers have found evidence for a thick atmosphere on lava planet TOI-561 b. It's a broiling hot super-Earth world 560 light-years from Earth.
January 2, 2026
See the best deep-sky photos of December 2025 here
Enjoy this gallery of deep-sky photos for December 2025 from our EarthSky community. If you have a great photo to share, send it in, too. We love to see them!
January 2, 2026
Bright blue cosmic outbursts linked to black holes
Astronomers studying one of the strongest bright blue cosmic outbursts believe they occur in a binary star system where a black hole tears its companion apart.
January 2, 2026
Are the December solstice and January perihelion related?
December solstice 2025 occurred on December 21. Earth will be closest to the sun about 2 weeks later, on January 3. Coincidence?
January 2, 2026
How to translate UTC to your local time zone
The Earth has about 24 time zones. Because these differ widely, science uses Universal Time, or UTC. Learn how to translate UTC to your local time zone.
January 1, 2026
What is a full moon? All you need to know
The full moon, opposite the sun in its orbit, shows us its sunlit side. The moon appears full a couple of days before and after the exact moment of full moon.
January 1, 2026
Pictor and Reticulum, the Painter’s Easel and Net
Pictor and Reticulum, the Painter's Easel and Net, are two constellations in southern skies on either side of the Large Magellanic Cloud.
January 1, 2026
