Christmas 2025 skywatching guide: What you can see in the night sky on Dec. 25
The night sky is the Christmas gift that just keeps giving....
Dec 25Space.comScience
The night sky is the Christmas gift that just keeps giving....
Chinese researchers have proposed a simple yet powerful theory to explain one of physicsâ oldest puzzles: why time only moves forward and why travelling to the past remains impossible. Physicist Cai Q...
"I think every astronomer is going to find something of value here, as NASA's missions enable the world to answer fundamental questions about how the universe got its start, and how it changed to even...
đ Key Facts â An analysis examined the expansion of cracks in the Thwaites Glacier. â The study covers the past 20 years of observation...
The Westerlund 2 star cluster is home to some of the Milky Way's brightest stars....
Article URL: https://www.cia.gov/readingroom/docs/CIA-RDP96-00789R002800180001-2.pdf Comments URL: https://news.ycombinator.com/item?id=46417110 Points: 5 # Comments: 0...
Test your space smarts with our weekly crossword challenge, crafted from Space.com's biggest headlines....
Article URL: https://phys.org/news/2025-12-einstein-probe-ray-flare-nearby.html Comments URL: https://news.ycombinator.com/item?id=46471784 Points: 4 # Comments: 1...
Article URL: https://cavendishlabs.org/blog/negative-temperature/ Comments URL: https://news.ycombinator.com/item?id=46579374 Points: 30 # Comments: 8...
Article URL: https://arxiv.org/abs/2512.24617 Comments URL: https://news.ycombinator.com/item?id=46542982 Points: 5 # Comments: 0...
Searches for dark matter particles have come up empty so far, driving theorists to get more creative with their ideas....
New discoveries and fresh looks at familiar worlds show how far exoplanet science has come â and how much remains unknown....
We have selected seven stories from this weekâs news across Hong Kong, mainland China, the wider Asia region and beyond that resonated with our readers and shed light on topical issues. If you would l...
An online video has gone viral showing 93-year-old Dr. Marshall Lindheimer, who has dementia, hearing about his groundbreaking research to treat and diagnose the pregnancy condition of preeclampsia....
Nature, Published online: 23 December 2025; doi:10.1038/s41586-025-10044-8 Author Correction: Rolling back human pluripotent stem cells to an eight-cell embryo-like stage...
Article URL: https://stats.stackexchange.com/questions/674129/why-does-a-linear-least-squares-fit-appear-to-have-a-bias-when-applied-to-simple Comments URL: https://news.ycombinator.com/item?id=464918...
"The Chinese may well beat the U.S. with a grab sample."...
Bad news for those hoping interstellar invader 3I/ATLAS is an alien spacecraft as technosignature search turns up empty....
Beneath the Mediterranean, physicists at the Cubic Kilometre Neutrino Telescope Initiative built a cathedral of glass spheres that listens for cosmic whispersâand this year, it heard the most energeti...
As a space scientist, I predict that the company will soon have to reckon with a growing problem: space debris....