NGC 2440 Nucleus: The Hottest Star?.

In the center of the above photograph lies a star with one of the hottest surface temperatures yet confirmed. This bright white dwarf star's surface has been measured at greater than 200,000 degrees Celsius - more than 30 times hotter than that of our own Sun . The white dwarf 's extreme heat makes it glow extraordinarily bright: intrinsically more than 250 times brighter than the Sun . The star is at the center of the planetary nebula titled NGC 2440, which lies inside our Milky Way Galaxy . The above computer sharpened image was taken by the Hubble Space Telescope .