This ghostly green bubble is a planetary nebula

Stars the size of the Sun typically end their lives as tiny and faint white dwarf stars. But as they make the final transition into retirement their atmospheres are blown away into space.

Merry Christmas from planetary nebula NGC 5189

NASA's Hubble Space Telescope has snapped a striking picture of planetary nebula NGC 5189.

Dying star briefly reborn

European Space Agency astronomers have found evidence for a dying sun-like star coming back to life - something they say may happen to our own sun in a few billion years.

Hubble spots celestial swan and butterfly

NASA’s Hubble telescope has captured a breathtaking image of planetary nebula NGC 7026.