1440 light-years

This image shows a small part of the Veil Nebula, the remains of a supernova, an immense stellar explosion, that happened between 5000 and 8000 years ago. Here we can see the interstellar gas being heated by the incredible shockwave that is still expanding through space at around 170 kilometres per second.

Credit: Image made in visible light by Jean-Charlies Cuillandre for the Canada-France-Hawaii Telescope Corporation.

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