Sign Up for Our Amazing Newsletter!
A daily update by email. Science news, great photos, sky alerts.
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
Posts by
EarthSky Voices
Superkilonova: Double explosion could be first ever seen
Astronomers have detected a strange double explosion of a star and hypothesize that it is a kilonova following a supernova: a superkilonova.
December 30, 2025
Space
NASA’s SPHEREx observatory completes stunning 1st cosmic map
NASA's SPHEREx has produced its 1st cosmic map, revealing the entire sky in 102 colors. Take a look at this spectacular map.
December 28, 2025
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
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
Astronomers see monster stars from the cosmic dawn
Researchers have found evidence for monster stars in the early universe. These giants collapsed directly into the earliest supermassive black holes.
December 16, 2025
Earth
Polar bear DNA changing in response to climate change
A new study has found that polar bear DNA might be evolving to help these creatures adapt to the stresses of our changing climate.
December 14, 2025
Long-lasting gamma-ray burst is a unique puzzle
We now have more insight on the longest gamma-ray burst yet. The burst lasted at least 7 hours, nearly double that of the previous record.
December 11, 2025
Your earliest sunset comes before the winter solstice
The solstice comes on December 21, 2025, at 15:03 UTC. Does that coincide with your earliest sunset? Probably not. It depends on where you live.
December 7, 2025
Where’s the normal matter in our universe?
Planets and stars in the night sky are made of normal matter. Yet only 9% of the universe's normal matter is in objects such as these. Where is the rest of it?
December 7, 2025
Sumatran tiger sightings triple on Indonesian island
Camera traps on the Indonesia island of Sumatra caught 3 times as many endangered Sumatran tigers as before. The Sumatran tiger is thriving in this region.
December 7, 2025
