Kepler Observes A Supernova’s Shockwave In Visible Light for the First Time

An artist’s impression of a supernova explosion. With the help of NASA’s Kepler space telescope, astronomers were able to observe for the first time the exact moment when the shockwave from a supernova reaches the surface of the progenitor star just before the latter explodes. Image Credit: ESO/M. Kornmesser

One of the most impressive [...]