Science

WASHINGTON — A new study recommends that the United States pursue rapid development of a space nuclear power system to keep pace with geopolitical rivals, but is less clear about which agency should take the lead. To continue reading this article: Register now and get3 free articles every month. You’ll also receive our weekly SpaceNews This Week newsletter every Friday. …

Researchers have pulled the perfectly-preserved skull of an ice age horse from a mine in Yukon, Canada, new pictures show. Based on the soil around the skull and the depth of sediments where it was found, experts estimate that the horse lived about 30,000 years ago — but more precise radiocarbon dating could narrow this down, a spokesperson for the …

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Scientists have discovered a long-lost landscape that’s been preserved beneath the Antarctic Ice Sheet for 30 million years. Erosion by ancient rivers appears to have carved large, flat surfaces beneath the ice in East Antarctica between 80 million and 34 million years ago. Understanding how these features formed, and how they continue to affect the landscape, could help refine predictions …

Surface-deployed substrates for coral spawning and colonization – credit ReefSeed In the Maldives, a mobile coral spawning system has been trialed with scintillating success, as 10,000 juvenile corals were grown by local operators. It represents not only a major hope that island nations can abate the loss of coral reefs, but also that the spawning system’s $1.5 million grant investment …

CNN  —  A meteorite that is the largest known piece of Mars on Earth has sold for $5.3 million, with taxes and fees, to an anonymous bidder at a Sotheby’s New York auction Wednesday. Known as NWA 16788, the meteorite weighs 54 pounds (24.5 kilograms), massive compared with most Martian meteorites, which tend to be small fragments, auction house Sotheby’s …

These complex, looping tracks pressed into ancient seafloor mud look much more like doodles made by a child with a stick than fossils of animal movement. However, new measurements have shown those squiggles were, in fact, purposeful movements along paths made by primitive animals navigating their world almost 550 million years ago, well before textbooks say complex life “took off” …

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