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Posts by
EarthSky Voices
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
Will we digitize human bodies for healthcare?
What would it be like if we could digitize human bodies? We could recognize heart attacks as they happen and deliver tailored doses of medicine to the sick.
December 5, 2025
What time is it on Mars? The 1st precise answer
What time is it on Mars? The time difference between Mars and Earth is a complicated puzzle. But it's necessary to solve for future explorations.
December 5, 2025
Don’t worry about overeating at the holidays, says dietitian
A day of overeating at the holidays isn't harmful, a dietitian explains. Here's how to enjoy your holiday meal without worry.
November 27, 2025
