James Webb Space Telescope, supernova

The shockwave Webb studied emerged from Cassiopeia A, now a neutron star, about 11,000 light-years from Earth. After the ...
The James Webb Space Telescope has captured new imagery of supernova remnant Cassiopeia A. It is 11,000 light-years away in the Cassiopeia constellation. Credit: Space.com | footage courtesy: NASA, ...