Thursday, October 21, 2010

NASA Hubble Image: NGC 6210 Hercules constellation



The Hubble Space Telescope captured this striking image of the curious planetary nebula NGC 6210, which is located about 6,500 light-years away in the constellation of Hercules. Credit: ESA/Hubble and NASA

A star's last gasp at the final stage of its life has been frozen for all time in a new photo by the Hubble Space Telescope.

In the photo, Hubble took a deep look at NGC 6210, a curious planetary nebula located about 6,500 light-years away, in the constellation of Hercules.

At the heart of NGC 6210 is a star slightly less massive than our sun that is in the last fitful stage of its life cycle.

The star's death spasms have kicked off multiple shells of material with different degrees of symmetry, giving the NGC 6210 nebula its odd, bulbous shape.

The new Hubble image shows the inner region of the planetary nebula in unprecedented detail, where the central star is surrounded by a thin, bluish bubble that reveals a delicate filamentary structure.

The glowing bubble appears to be intertwined with an asymmetric, reddish gas formation where holes, filaments and pillars are clearly visible.

Planetary nebulas are shells of gas and dust expelled by stars near the end of their lives. They are typically seen around stars comparable or smaller in size than the sun. Planetary nebulas are not related to planets as their name suggests, but instead earned the moniker because they resembled giant planets when viewed through early telescopes.

A star's life ends when it runs out of fuel for its thermonuclear engine. The estimated lifetime for a sun-like star is about 10 billion years.

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