Hubble observations over the past 2 decades have revealed an huge complexity and diversity of structure in planetary nebulae. This is an X-ray/optical composite image of the Cat’s Eye Nebula (NGC 6543). Image via HST’S Greatest Hit
Hubble’s fireball NASA/ESA Hubble Space Telescope e the central Wolf-Rayet star known as Hen 2-427 — more commonly known as WR 124 — surrounded by the nebula M1-67: ESA/Hubble & NASA. Acknowledgement: J. Schmidt.