This image, captured by the Hubble Space Telescope, shows the Engraved Hourglass Nebula – also known as MyCn 18 – with an unusual eye in its centre.
This represents the end of the giant star’s lifecycle. As their nuclear fuel runs out, sun-like stars eject their outer layers and the core becomes a cooling, fading white dwarf.
The hourglass shape is comprised of colourful glowing rings of gas being expelled from the star: nitrogen (red), hydrogen (green) and oxygen (blue).
The clarity of Hubble images shows fascinating detail of the nebula ejection process, helping to solve the mysteries of their complex shapes and symmetries.
Originally published by Cosmos as Space is watching
Cosmos
Curated content from the editorial staff at Cosmos Magazine.
Read science facts, not fiction...
There’s never been a more important time to explain the facts, cherish evidence-based knowledge and to showcase the latest scientific, technological and engineering breakthroughs. Cosmos is published by The Royal Institution of Australia, a charity dedicated to connecting people with the world of science. Financial contributions, however big or small, help us provide access to trusted science information at a time when the world needs it most. Please support us by making a donation or purchasing a subscription today.