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Astronomie - Early stages of an ancient supernova observed using gravitational lensing

14.11.2022

cooling-supernova-1

Cooling down: false-colour representation of the three images of the supernova, showing how the object cooled over a period of eight days. (Courtesy: Wenlei Chen/NASA)

Light from a supernova that was emitted just six hours after the initial stellar explosion has been observed along with light emitted two and eight days later. The observation was made by an international team using the Hubble Space Telescope (HST). The supernova is also notable for having occurred around 11.5 billion years ago when the universe was in its relative infancy. The faint light could only be seen because of the gravitational-lensing effect of a galaxy that lies between Earth and the supernova.

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