Keyhole Nebula and Digitus Impudicus Keychain

Galaxies, Stars and Nebulae series: Details of a mysterious, complex structure within the Carina Nebula (NGC 3372) are revealed by this image of the 'Keyhole Nebula', obtained with the Hubble Space Telescope. The picture is dominated by a large, approximately circular feature, which is part of the Keyhole Nebula, named in the 19th century by Sir John Herschel. It lies about 8000 light-years from Earth and contains stars that are among the hottest and most massive known, each about 10 times as hot, and 100 times as massive, as our Sun. image code: kndigimp Image credit: Hubble's Wide Field Planetary Camera 2