While appearing as a delicate and light veil draped across the sky, this image from the [Links nur für registrierte Nutzer] actually depicts a small section of the Cygnus supernova blast wave, located around 2400 light-years away. The name of the [Links nur für registrierte Nutzer] comes from its position in the northern constellation of [Links nur für registrierte Nutzer] (The Swan), where it covers an area 36 times larger than the full moon.
The original [Links nur für registrierte Nutzer] explosion blasted apart a dying star about 20 times more massive than our Sun between 10 000 and 20 000 years ago. Since then, the remnant has expanded 60 light-years from its centre. The shockwave marks the outer edge of the supernova remnant and continues to expand at around 350 kilometres per second. The interaction of the ejected material and the low-density interstellar material swept up by the shockwave forms the distinctive veil-like structure seen in this image.
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