A defunct, 660-pound (300 kilograms) NASA satellite is set to tumble uncontrollably back to Earth after spending two decades studying the sun from our orbit. NASA's Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI) satellite will hurtle through the Earth's...
The future of medication abortion, which accounts for more than half of abortions in the U.S., is in limbo after a federal judge ordered the Food and Drug Administration to withdraw its approval of the drug mifepristone, also known...
The asteroid that wiped out the dinosaurs did not trigger a long-lasting impact winter, scientists have found — a discovery that raises new questions about what happened on Earth just after it hit. One spring day 66 million years ago,...
Adjusting the distance between nanoparticles creates different coloursPablo Cencillo-Abad, Daniel Fran A nanotechnology paint inspired by a butterfly’s wing is so lightweight that using it on a Boeing 747 could cut the plane’s mass by half a tonne. A...
Of the many different kinds of stars, asymptotic giant branch (AGB) stars, usually slightly larger and older than our own sun, are known producers of interstellar dust. Dusty AGBs are particularly prominent producers of dust, and the light they...
A handful of plastic washed ashore at Kamilo Beach, HawaiiThe 5 Gyres Institute, CC-BY 4.0 (https://creativecommons.org/licenses/by/4.0/) Concentrations of microplastics in the oceans have surged in the past 18 years, with researchers now estimating there are 2.3 million tonnes floating...
Editor’s Note (4/12/23): On Tuesday New York City mayor Eric Adams announced that the New York City Police Department (NYPD) will be deploying a new fleet of robots and other devices, including the controversial “Digidog.” The NYPD first tried...
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