Fichièr:Ceres Rotation.jpg
Fichièr d'origina (880 × 781 pixèl, talha del fichièr: 94 Ko, tipe MIME: image/jpeg)
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Aqueste fichièr proven de Wikimedia Commons?. Las informacions que lo concernisson son afichadas çaijós (procedura). |
Descripcion
| Descripcion |
NASA's Hubble Space Telescope took these images of the asteroid 1 Ceres over a 2-hour and 20-minute span, the time it takes the Texas-sized object to complete one quarter of a rotation. One day on Ceres lasts 9 hours. Hubble snapped 267 images of Ceres as it watched the asteroid make more than one rotation. By observing the asteroid during a full rotation, astronomers confirmed that Ceres has a nearly round body like Earth's. Ceres' shape suggests that its interior is layered like those of terrestrial planets such as Earth. Ceres may have a rocky inner core, an icy mantle, and a thin, dusty outer crust inferred from its density and rotation rate. The bright spot that appears in each image is a mystery. It is brighter than its surroundings. Yet it is still very dark, reflecting only a small portion of the sunlight that shines on it. Ceres is approximately 580 miles (930 kilometers) across and is the largest known asteroid. It resides with tens of thousands of other asteroids in a region between the orbits of Mars and Jupiter called the main asteroid belt. Besides being the largest asteroid, Ceres also was the first to be discovered, in 1801. Astronomers enhanced the contrast in these images to bring out important features on Ceres' surface. The observations were made in visible and in ultraviolet light. Hubble took the snapshots between December 2003 and January 2004. Esperanto: La Hubble-teleskopo de NASA fotis Cereson dum 140 minutoj, proksimume kvarona rotacio de la planedeto. La relative brila makulo, efektive ankaŭ ĝi tre malhela, restas enigma. |
| Data | Image released 2005 September 7 |
| Font |
NASA: |
| Autor | NASA, ESA, J. Parker (Southwest Research Institute), P. Thomas (Cornell University), and L. McFadden (University of Maryland, College Park) |
| Permission (Reütilizacion d'aqueste fichièr) |
Unless otherwise specifically stated, no claim to copyright is being asserted by STScI and it may be freely used as in the public domain in accordance with NASA's contract. [...] [1] |
| Autras versions | Image:Ceres.jpg |
Publicat jos licéncia(s)
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This file is in the public domain because it was created by NASA and ESA. NASA Hubble material (and ESA Hubble material prior to 2009) is copyright-free and may be freely used as in the public domain without fee, on the condition that only NASA, STScI, and/or ESA is credited as the source of the material. This license does not apply if ESA material created after 2008 or source material from other organizations is in use. The material was created for NASA by Space Telescope Science Institute under Contract NAS5-26555, or for ESA by the Hubble European Space Agency Information Centre. Copyright statement at hubblesite.org or 2008 copyright statement at spacetelescope.org. For material created by the European Space Agency on the spacetelescope.org site since 2009, use the {{ESA-Hubble}} tag. |
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| Data e ora | Miniatura | Dimensions | Utilizaire | Comentari | |
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| actual | 30 genièr de 2006 a 07.53 | | 880×781 (94 Ko) | Arnomane | higher resolution |
| 9 setembre de 2005 a 13.17 |  | 300×300 (4 Ko) | Vesta~commonswiki | {{Information| |Description = NASA's Hubble Space Telescope took these images of the asteroid 1 Ceres over a 2-hour and 20-minute span, the time it takes the Texas-sized object to complete one quarter of a rotation. One day on Ceres lasts 9 hours. The bri |
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