The powerful vision of the NASA/ESA Hubble Space Telescope has allowed astronomers to analyze for the first time the multiple images of a gravitationally lensed Type Ia supernova. Hubble’s view on iPTF16geu. Image credit: NASA / ESA / Hubble. Type Ia supernovae always have the same intrinsic brightness, so by measuring how bright they appear astronomers can determine how far away they are. Known as standard candles, these supernovae have been used...
