Happy 25th Birthday to Hubble!

As Hubble Celebrates 25 Years, Here’s Another Stunning Photo From Space

Repost courtesy of io9.com

As Hubble Celebrates 25 Years, Here's Another Stunning Photo From Space

We showed you some of the Hubble Space Telescope’s most memorable images earlier this week, gathered in honor of the telescope’s 25th year in space. Here’s another favorite from the vaults, a shot of the “Eskimo” Nebula taken in 2000. Here’s what NASA had to say about the photo 15 years ago:

In its first glimpse of the heavens following the successful December 1999 servicing mission, NASA’s Hubble Space Telescope has captured a majestic view of a planetary nebula, the glowing remains of a dying, Sun-like star. This stellar relic, first spied by William Herschel in 1787, is nicknamed the “Eskimo” Nebula (NGC 2392) because, when viewed through ground-based telescopes, it resembles a face surrounded by a fur parka. In this Hubble telescope image, the “parka” is really a disk of material embellished with a ring of comet-shaped objects, with their tails streaming away from the central, dying star. The Eskimo’s “face” also contains some fascinating details. Although this bright central region resembles a ball of twine, it is, in reality, a bubble of material being blown into space by the central star’s intense “wind” of high-speed material.

The planetary nebula began forming about 10,000 years ago, when the dying star began flinging material into space. The nebula is composed of two elliptically shaped lobes of matter streaming above and below the dying star. In this photo, one bubble lies in front of the other, obscuring part of the second lobe.

Scientists believe that a ring of dense material around the star’s equator, ejected during its red giant phase, created the nebula’s shape. This dense waist of material is plodding along at 72,000 miles per hour (115,000 kilometers per hour), preventing high-velocity stellar winds from pushing matter along the equator. Instead, the 900,000-mile-per-hour (1.5-million-kilometer-per-hour) winds are sweeping the material above and below the star, creating the elongated bubbles. The bubbles are not smooth like balloons but have filaments of denser matter. Each bubble is about 1 light-year long and about half a light-year wide. Scientists are still puzzled about the origin of the comet-shaped features in the “parka.” One possible explanation is that these objects formed from a collision of slow- and fast-moving gases.

The Eskimo Nebula is about 5,000 light-years from Earth in the constellation Gemini. The picture was taken Jan. 10 and 11, 2000, with the Wide Field and Planetary Camera 2. The nebula’s glowing gases produce the colors in this image: nitrogen (red), hydrogen (green), oxygen (blue), and helium (violet).

Credit: NASA, Andrew Fruchter and the ERO Team [Sylvia Baggett (STScI), Richard Hook (ST-ECF), Zoltan Levay (STScI)

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Gallery | This entry was posted in Astronomy New Discoveries, Hubble, Skywatching, Space Photography and tagged , , , , , , , , , . Bookmark the permalink.

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