THIS SUPERNOVA IS STILL EXPANDING
Kepler’s Supernova Remnant
17,000 light-years from Earth
Chandra watched it for 25 years
Its fastest shock waves reach ~2% of light speed
These images capture the expansion of Kepler's supernova over 25 years.
It is located approximately 17,000 light-years from Earth, and its fastest parts are moving at 2% of the speed of light.