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Berkas:NASA-JPL-Caltech - Double the Rubble (PIA11375) (pd).jpg

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Deskripsi
English: This artist's conception shows the closest known planetary system to our own, called Epsilon Eridani. Observations from NASA's Spitzer Space Telescope show that the system hosts two asteroid belts, in addition to previously identified candidate planets and an outer comet ring.

Epsilon Eridani is located about 10 light-years away in the constellation Eridanus. It is visible in the night skies with the naked eye.

The system's inner asteroid belt appears as the yellowish ring around the star, while the outer asteroid belt is in the foreground. The outermost comet ring is too far out to be seen in this view, but comets originating from it are shown in the upper right corner.

Astronomers think that each of Epsilon Eridani's asteroid belts could have a planet orbiting just outside it, shepherding its rocky debris into a ring in the same way that Jupiter helps keep our asteroid belt confined. The planet near the inner belt was previously identified in 2000 via the radial velocity, or "star wobble," technique, while the planet near the outer belt was inferred when Spitzer discovered the belt.

The inner belt orbits at a distance of about 3 astronomical units from its star —or about the same position as the asteroid belt in our own solar system (an astronomical unit is the distance between Earth and our sun). The second asteroid belt lies at about 20 astronomical units from the star, or a position comparable to Uranus in our solar system. The outer comet ring orbits from 35 to 90 astronomical units from the star; our solar system's analogous Kuiper Belt extends from about 30 to 50 astronomical units from the sun.
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Tanggal Tanggal tak diketahui
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Sumber Double the Rubble
Pembuat NASA/JPL-Caltech
Gambar atau video ini telah dikatalogkan oleh Laboratorium Jet Propulsion milik National Aeronautics and Space Administration (NASA)dibawah ID Foto: PIA11375.

Label ini tidak menunjukkan status hak cipta dari berkas. Label hak cipta yang biasa tetap dibutuhkan. Lihat Commons:Lisensi.
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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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Tanggal/WaktuMiniaturDimensiPenggunaKomentar
terkini13 Februari 2017 21.49Miniatur versi sejak 13 Februari 2017 21.493.000 × 1.600 (2,15 MB)David Levyrecompressed TIFF file
7 November 2011 05.57Miniatur versi sejak 7 November 2011 05.573.000 × 1.600 (4,11 MB)OgreBot(BOT): Reverting to most recent version before archival
7 November 2011 05.57Miniatur versi sejak 7 November 2011 05.573.000 × 1.600 (625 KB)OgreBot(BOT): Uploading old version of file from en.wikipedia; originally uploaded on 2008-10-27 21:14:20 by Cookbutter
14 November 2008 18.51Miniatur versi sejak 14 November 2008 18.513.000 × 1.600 (4,11 MB)ComputerHotline{{Information |Description={{en|1=This artist's conception shows the closest known planetary system to our own, called Epsilon Eridani. Observations from NASA's Spitzer Space Telescope show that the system hosts two asteroid belts, in addition to previous

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