Supernova remnant Cassiopeia A. This is the remains of a star that exploded 325 years ago. When a large star dies,gas shells explode outwards and collide with interstellar material. The energy of the collision ionises the gas,causing it to glow. Cassiopeia A lies around 10,000 light years from Earth in the constellation Cassiopeia | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / J-P METSAVAINIO |
Bildgröße: | 5138 px × 3401 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |