User’s Photo Gallery No 1 Astro Images A place for your best Astro images. Keyhole NebulaKeyhole Nebula at the heart of the Great Eta Carina nebula. Eta Carina is the bright star next to it, surrounded by the Homunculus Nebula, formed in the 1800's when the star underwent mass ejection events. Image by Greg Bradford Keyhole Nebula Page 1 of 11