Advent Calendar 2021
It's that time of the year again! Each day until December 24, you can open a door of our online advent calendar to marvel at stunning images of science and find fascinating research information. Be prepared to be amazed and enjoy browsing!
Some stars go out in a spectacular fashion: they explode as supernovae. This creates a neutron star or a black hole and so-called emission nebulae - clouds of interstellar gas that emit light of different wavelengths. Our background image shows the Veil Nebula. This remnant of a giant supernova lies about 2,400 light years from Earth in the constellation Cygnus.
© NASA/ESA/Hubble Heritage Team