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Science history: Stephen Hawking writes a tiny paper — and turns our understanding of black holes inside out — March 1, 1974
In 1974, physicist Stephen Hawking described the potential for tiny, primordial black holes that existed at the dawn of time to explode — and reshaped what we knew about these cosmic behemoths.
Giant string of organic molecules on Mars may be one of the best signs of life yet
A new NASA analysis concludes that it is "reasonable to hypothesize" that living things could have formed the odd organic molecules discovered on Mars.
The sun just experienced its first 'spotless days' in 4 years — but we're not in the clear yet
Earlier this week, the number of visible sunspots on our home star fell to zero for the first time in 1,335 days. This normally indicates a period of greatly reduced solar activity, but it's still too soon to relax, experts say.
NASA announces sweeping overhaul of Artemis return to moon
A major shakeup to NASA's Artemis program will step rocket launches up to an annual basis, and discard a Boeing-designed upper stage.
Rubin Observatory alerts scientists to 800,000 changes in the sky in one night
The Vera C. Rubin Observatory sent scientists nearly 1 million astronomy alerts in one night, showing off changes in the sky. Eventually, the telescope is expected to reach 7 million alerts per night.
Giant 'spiderwebs' on Mars contain tiny egg-like structures that scientists 'can't quite explain,' NASA rover reveals
New photos captured by NASA's Curiosity rover show that Mars' giant, spiderweb-like "boxwork" features are covered in tiny, never-before-seen nodules that bear a striking resemblance to arachnid eggs. And researchers are struggling to explain them.
Fresh look at Apollo moon rocks solves decades-old lunar mystery
The lunar rocks collected by Apollo astronauts suggested the moon had a strong magnetic field. A new analysis shows the opposite.
Chinese astronauts describe moment a crack was discovered on Shenzhou-20 spacecraft
Taikonauts from the ill-fated Shenzhou-20 mission have described what happened when they discovered cracks on their spacecraft as they prepared to depart China's Tiangong space station last year.
'Rare and enigmatic' structures found at the Milky Way's center in largest-ever map of its kind
Scientists using the ALMA telescope have created the most-detailed-ever map of the Milky Way's chaotic center. The observations could open a window to the ancient universe as it appeared shortly after the Big Bang.
