- Kepler’s supernova remnants still moving at high speeds 400 years after the explosion
- The remnants are moving at speeds of 20 million miles per hour
- That’s 25,000 times faster than the speed of sound on Earth
Astronomers have found that the debris from a supernova blast is still moving at extremely high speeds some 400 years after the blast was first observed from Earth.
It was in 1604 that early astronomers, including Johannes Kepler, first observed the supernova explosion we now know as Kepler’s Supernova, some 20,000 light years away in the Milky Way. At the time, its greatest apparent magnitude was about -2.5, making it brighter than Jupiter. But by 1606, it was no longer visible to the naked eye.
Today, astronomers still get to observe the phenomenon through advanced means such as NASA’s Chandra X-ray Observatory.
In a recent study published in The Astrophysical Journal, astronomers