Another corking picture taken by the Hubble Space Telescope. I don’t think it could ever be possible to anything less than amazed by these.
This time it is a very thin section of a supernova remnant caused by a stellar explosion that occurred more than 1,000 years ago.
In May 1006 observers from Africa to Europe to the
In the 1960s radio astronomers detected a near circular ring of material at the recorded position of the supernova. The size of the remnant implied that the blast wave from the supernova had expanded at nearly 20 million miles per hour over the near 1,000 years since the explosion. And then in 1976 came the first detection of the faint optical emission of the supernova, a tiny portion of which is now revealed in detail by the Hubble observation.
Hydrogen gas heated by this fast shock wave emits radiation in visible light.
It is now known that SN 1006 has a diameter of nearly 60 light-years, and it is still expanding at roughly 6 million miles per hour. Even at this speed it takes observations over years to see a significant outward motion of the shock wave against the background stars
SN 1006 resides within our Milky Way Galaxy. In the Hubble image, many background galaxies (the orange objects) far off in the distant universe can be seen dotting the image. Most of the white dots are foreground or background stars in our Milky Way galaxy.