The Cat's Eye Nebula (NGC 6543) is one of the best known planetary nebulae in the sky. Its haunting symmetries are seen in the very central region of this stunning false-color picture, processed to reveal the enormous but extremely faint halo of gaseous material, over three light-years across, which surrounds the brighter, familiar planetary nebula. - Image Credit : R. Corradi (Isaac Newton Group), Nordic Optical Telescope
Photograph: Mark Hanson/Astronomy Photographer of the Year 2014... NGC 6888 by Mark Hanson (US). This colourful starscape taken from Rancho Hidalgo, New Mexico, US reveals the searing heat of the Crescent Nebula glowing in a whirl of red and blue. (Cropped for Pinterest, click on the image for story and full image)
The first identified compact galaxy group, Stephan's Quintet is featured in this remarkable image constructed with data drawn from Hubble Legacy Archive and the Subaru Telescope on the summit of Mauna Kea. The galaxies of the quintet are gathered near the center of the field, but really only four of the five are locked in a cosmic dance of repeated close encounters taking place some 300 million light-years away.