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Sun
Sun news: An auroral display on Christmas Eve?
Sun news December 24, 2025: Fast solar wind and a possible CME glancing blow might spark Christmas Eve auroras in high-latitude skies.
December 24, 2025
Human World
Space
Apollo 8 Earthrise photo anniversary today
Astronaut William Anders took this iconic photo of Earthrise on the 4th orbit of the moon aboard Apollo 8 on December 24, 1968.
Earth
The most exciting dinosaur discoveries of 2025
2025 was an amazing year for dinosaur discoveries, from dome-headed dinos to mini T. rexes. Here are some of the most exciting discoveries of the past year.
December 24, 2025
Astronomy Essentials
Tonight
Visible planets and night sky guide for December
Visible planets and night sky guide. Look for the waxing crescent moon hanging low in the western sky about 30 minutes after sunset.
December 24, 2025
Space
Sun
Solar wind ‘U-turn’ spotted by Parker Solar Probe
NASA's Parker Solar Probe images have revealed solar material blasted out from the sun returning to our star, rather than escaping as solar wind.
December 23, 2025
Astronomy Essentials
Top 6 favorite EarthSky videos from 2025. Watch them here!
Here are our top 6 favorite EarthSky videos from 2025. What will we share in 2026? Visit YouTube.com/@EarthSky to find out!
December 23, 2025
Space
See the top 10 stories of 2025 from EarthSky
Here are the top 10 stories of 2025. An interstellar comet visited us, cameras captured a meteorite strike and an earthquake, and much more!
December 23, 2025
Today's Image
The Christmas Tree cluster, a December delight
The Christmas Tree cluster is a collection of sparking bluish-white stars. It is above a cone-shaped cloud of gas in the constellation Monoceros.
December 23, 2025
Tonight
Latest sunrises late December and early January
Did you know the latest sunrises don’t occur on the shortest day, and the latest sunsets don’t fall on the longest day of the year?
December 23, 2025
Earth
Brown bears in central Italy are becoming less aggressive
As Apennine brown bears learned to co-exist with humans in central Italy, they evolved to become smaller and less aggressive, according to a new DNA study.
December 22, 2025
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