Space
Solo supernovae challenge cosmic distance standards
Supernovae were thought to need help from a nearby star – if they don't, we may have to rethink how we measure cosmic distances as well as dark energy
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Supernovae were thought to need help from a nearby star – if they don't, we may have to rethink how we measure cosmic distances as well as dark energy
"Infant Earths" could expand the search for alien life – but there's a warning note for supposedly habitable planets orbiting mature stars