Cat's Eye Nebula
Videos
The Cat's Eye Nebula is a planetary nebula in the northern constellation of Draco, discovered by William Herschel on February 15, 1786. It was the first planetary nebula whose spectrum was investigate
Hubble Space Telescope image of Cat's Eye Nebula
Cat's Eye Nebula imaged by Euclid and the Hubble Space Telescope
An optical image of the nebula's surrounding halo
Composite image using optical images from the HST and X-ray data from the Chandra X-ray Observatory
Wolf–Rayet star
Videos
Wolf–Rayet stars, often abbreviated as WR stars, are a rare heterogeneous set of stars with unusual spectra showing prominent broad emission lines of ionised helium and highly ionised nitrogen or carb
WR 136, a WN6 star where the atmosphere shed during the red supergiant phase has been shocked by the hot, fast WR winds to form a visible bubble nebula
GK Persei (Nova Persei 1901), which showed Wolf–Rayet features in its spectrum
WR 22 in the Carina Nebula
AB7 produces one of the highest excitation nebulae in the Magellanic Clouds.