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'A scale almost too big to imagine': Scientists spot monster black hole roaring with winds at more than 130 million mph
A black hole 30 million times the mass of the sun has produced winds one-fifth the speed of light, stunning scientists.
That was the week in science: Second earthquake hits Japan | Geminids to peak | NASA loses contact with Mars probe
Friday, Dec. 12, 2025: Your daily feed of the biggest discoveries and breakthroughs making headlines.
Rarrr! James Webb telescope spots 'monster stars' leaking nitrogen in the early universe
Researchers using the James Webb Space Telescope spotted huge stars leaking nitrogen in an early galaxy, hinting that such 'monster stars' might have been the source of ancient supermassive black holes.
Time moves faster on Mars, posing new challenges to crewed missions
Clocks on Mars tick faster by about 477 microseconds each Earth day, a new study suggests. This difference is significantly more than that for our moon, posing potential challenges for future crewed missions.
When does winter start? Your guide to the 2025 winter solstice.
Astronomical winter begins Sunday, Dec. 21 in the Northern Hemisphere. Here's how the solstice works.
Scientists spot 2 black holes that took turns slaughtering 1 unlucky star
A strange X-ray signal spotted decades ago may be the result of a star that got attacked by two black holes, one after the other.
This bright star will soon die in a nuclear explosion — and could be visible in Earth's daytime skies
The bright binary star system V Sagittae will flare up multiple times before finally going supernova within the next 100 years. When it explodes, it could be visible to the naked eye even in sunlit skies.
How to find the 'Christmas Star' — and what it really is
A brilliant point of light is rising in the eastern sky soon after dark this month, drawing comparisons to the "Star of Bethlehem."
