15 Mind-Blowing Pictures Of Space
14. MyCn18: The Eye In The Sky
https://twitter.com/ObservingSpace/status/597251299277545472In 1995, scientists used the Hubble Space Telescope to look out at the universe, and they found that it was looking back.
This image of MyCn18, or the Engraved Hourglass Nebula, shows a star in its dying throes. With all of its fuel used up, the outer layers are ejected far out into space and the star at the centre becomes a slowly fading white dwarf, gradually cooling down into nothing.
The colours of the planetary nebula show us what elements they are made up of. Red for nitrogen, green for hydrogen and blue for oxygen. It is the death of stars like this that shoot these elements out into the universe to be recycled into the building blocks of stars, planets and maybe even life.