The Golden Record's aluminium cover carries a smear of uranium-238 with a half-life of 4.468 billion years, put there so that whoever finds…
Aug 26, 2026
What's new in
Space
Planets, astronomy, and exploration beyond Earth.
In her 1925 Radcliffe thesis, Cecilia Payne calculated that stars are overwhelmingly hydrogen and helium
Aug 26, 2026
Only one antenna on Earth can still send commands to Voyager 2
Aug 25, 2026
Astronomers discovered a comet passing through our solar system in July 2025 carrying organic molecules formed in a distant star system—the…
Aug 23, 2026
A laser array on Earth could one day push a gram-scale spacecraft to roughly 20% of the speed of light
Aug 21, 2026
Astronomers have confirmed a super-Earth in the habitable zone of GJ 887
Aug 21, 2026
NASA's twin study found one modest thing
Aug 21, 2026
The fastest spacecraft ever built didn't set its record by firing a rocket engine
Aug 20, 2026
The computer that guided Apollo 11 to the Moon had only about 4 kilobytes of working memory and a processor running at roughly 1 MHz
Aug 19, 2026
Titan is the only world beyond Earth where you could step outside without a pressure suit
Aug 19, 2026
Enceladus sprays water, phosphates, molecular hydrogen and complex organics straight out of its buried ocean
Aug 17, 2026
For decades, scientists believed Titan hid a vast global ocean beneath its frozen crust
Aug 17, 2026