Astronomy Picture of the Week – The Colorful Demise of a Sun-Like Star

This image, taken by the Hubble Space Telescope, shows the colorful demise of a Sun-like star. The star is ending its life by casting off its outer layers of gas, which formed a cocoon around the star’s remaining core. Ultraviolet light from the dying star makes the material glow. The burned-out star, called a white dwarf, is the white dot in the center. It is one of the hottest known white dwarfs, with a surface temperature of nearly 200,000 degrees Celsius. The nebula is called NGC 2440 and lies about 4,000 light-years from Earth in the direction of the constellation Puppis.

NGC 2440 nebulaImage credit: NASA, ESA, and K. Noll (STScI)

Paul Tomaszewski is the founder of and He enjoys programming and writing on topics such as technology, business, astronomy, and many more. He also has a personal blog called

One Comment

  • Steve

    That is a fantastic picture. I’m always impressed by the clarity of images that the Hubble has given us over the years. I wonder if our own Sun will produce something as beautiful.

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