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Berkas:HR 8799 Debris Disk.jpg

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English: NASA's Spitzer Space Telescope captured this infrared image of a giant halo of very fine dust around the young star HR 8799, located 129 light-years away in the constellation Pegasus. The brightest parts of this dust cloud (yellow-white) likely come from the outer cold disk similar to our own Kuiper belt (beyond Neptune's orbit). The huge extended dust halo is seen as orange-red.

Astronomers think that the three large planets known to orbit the star are disturbing small comet-like bodies, causing them to collide and kick up dust. The extended dust halo has a diameter of about 2,000 astronomical units, or 2,000 times the distance between Earth and the sun. For reference, the size of Pluto's orbit is tiny by comparison, with a diameter of about 80 astronomical units.

This image was captured by Spitzer's multiband imaging photometer at an infrared wavelength of 70 microns in Jan. 2009.

(original Description: HR 8799 Debris Disk by Spitzer's multiband imaging photometer at an infrared wavelength of 70 micrometres in January 2009
Sumber http://www.spitzer.caltech.edu/images/2781-sig09-008-A-Picture-of-Unsettled-Planetary-Youth
Pembuat Spitzer space telescope, NASA

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Public domain Berkas ini berada dalam domain publik di Amerika Serikat karena semata-mata diciptakan oleh NASA. Kebijakan hak cipta NASA menyatakan bahwa "materi NASA tidak dilindungi oleh hak cipta kecuali dicatat". (Lihat Template:PD-USGov, Halaman kebijakan hak cipta NASA atau JPL Image Use Policy.)
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terkini15 Juli 2010 11.49Miniatur versi sejak 15 Juli 2010 11.492.400 × 3.000 (1,23 MB)Henrykus{{Information |Description={{en|1=NASA's Spitzer Space Telescope captured this infrared image of a giant halo of very fine dust around the young star HR 8799, located 129 light-years away in the constellation Pegasus. The brightest parts of this dust clou

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