Asteroider
Scientists have analyzed rare carbonaceous chondrites to uncover the composition of carbon-rich asteroids, identifying potential resources for future space exploration. The study, led by researchers at the Institute of Space Sciences, suggests certain asteroid types could yield water and materials, though large-scale mining remains challenging. Published in the Monthly Notices of the Royal Astronomical Society, the findings highlight promising targets for missions to the Moon and Mars.
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New studies suggest that explosions of comets or asteroids above Earth's surface, known as touchdown airbursts, may have occurred more often and caused widespread destruction than previously recognized. Led by UC Santa Barbara's James Kennett, researchers have identified markers of these events in diverse locations, from ocean sediments to ancient ruins. These findings highlight the potential climate and societal impacts of such invisible cosmic threats.
Scientists using data from the European Space Agency's Gaia mission have explained why some asteroids tumble chaotically while others spin steadily, linking it to collision frequency. The findings, presented at the EPSC-DPS2025 Joint Meeting in Helsinki, show a gap in rotation speeds that divides asteroid populations and indicates most are loose rubble piles. This could improve strategies for deflecting hazardous asteroids.
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En ny Der Spiegel-podcast forklarer, hvordan menneskeheden kan afbøje asteroider, der er på vej mod Jorden. Eksperter diskuterer succesfulde missioner som DART og fremtidige planer. Sandsynligheden for sådanne nedslag er lav, men konsekvenserne ville være ødelæggende.