A twisting, luminous bubble towers 3,500 light-years above a blazing cauldron at the core of a distant galaxy in this image captured by JPL's Wide-Field and Planetary Camera 2 aboard the Hubble Space Telescope. The image shows glowing gas as red and starlight as blue and green. The galaxy, NGC 3079, is located 50 million light-years from Earth in the constellation Ursa Major.