Illustration of a white dwarf siphoning material from its companion star.
NASA's Kepler space telescope captured the light of a stellar explosion that occurred about 170 million years ago.
Using the now-retired Kepler telescope as well as ground-based telescopes, astronomers detected the bright light of a supernova called SN 2018oh on Feb. 4, 2018.
The supernova could be the result of a single white dwarf star that siphoned material from its companion star, causing it to implode.
The shock wave from the exploding white dwarf would have then collided with the companion star, creating the extremely hot, bright observations.