NASA is evaluating its options for dealing with an astronaut health issue in orbit, one of which is an early end to SpaceX's Crew-11 mission to the International Space Station.
In 1604, German astronomer Johannes Kepler spotted a new star in the sky that was so bright it could be seen during the daytime. The discovery, which Kepler described in his book *De Stella Nova*, caused quite a stir in the astronomical community. With this one point of light, astronomers questioned the prevailing dogma that the "firmament" (the background stars in the sky) was not unchanging and permanent. In time, we would come to realize that Kepler's Supernova (as it's come to be known) was a white dwarf that exceeded its critical mass and exploded in a brilliant burst.

