3I/ATLAS has now made its closest approach to the sun and Earth and is now heading back out toward the outer solar system.

Farewell, comet 3I/ATLAS! Interstellar visitor heads for the outer solar system after its closest approach to Earth

An ancient woman thought to have hailed from sub-Saharan Africa and therefore to have been the first known Black Briton actually had fairer skin and was from southern England, researchers using new DNA sequencing have found.

Story of ‘first Black Briton’ rewritten by advances in ancient DNA technology

The South Korean startup Innospace will attempt its first orbital launch from Brazil's Alcântara Space Center on Friday (Dec. 19), and you can watch the action live.

Watch South Korean startup Innospace attempt its 1st-ever orbital launch today

Sleep is universal “even though it’s actually very risky,” said Paul-Antoine Libourel, a researcher at the Neuroscience Research Center of Lyon in France.  For a long time, scientists could only make educated guesses about when wild animals were sleeping, observing when they lay still and closed their eyes.

Nodding off is dangerous. Some animals have evolved extreme ways to sleep in precarious environments

Astrophotographer Josh Dury has captured the beauty of the Geminids in this stunning timelapse exposure.

Geminid meteors streak under green sky | Space photo of the day for Dec. 19, 2025

Though a training exercise, the demonstration of force, firepower, and meticulous coordination between different arms of the military felt about as real as one can get. It took around seven minutes of deafening fire and bombardment, often shaking the ground in the area, before IDF forces charged forward to take positions within the “Hamas” village outpost.

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