Vela Supernova Remnant
The intricate structure of the aftermath of a supernova explosion — the violent death of a star many times more massive than the sun which took place over 10,000 years ago. Seen against stars and gas in the disc of our Milky Way, this expanding shell of debris and heated gas now covers an area of the sky which is 20 times bigger than the disc of the full moon.
Image: Vela Supernova Remnant © Marco Lorenzi.