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AI-generated imageThe test shows a spacecraft can pin down an asteroid's exact distance while flying past it at 18,000 kilometres per hour, a technique that could sharpen predictions of which asteroids might one day threaten Earth.
AI-generated imageTwo competing studies published together suggest a correction for the age of exploding stars could overturn one of cosmology's most celebrated findings, or leave it intact, depending on whose analysis is right.
AI-generated imageThe objects may help explain two unsolved problems in astrophysics: the stars behind a key type of supernova, and what strips electrons from gas between stars in some galaxies.
AI-generated imageSpectrum's flight gives Western Europe its first homegrown route to orbit, reducing reliance on launch sites in French Guiana, Florida and Russia.