File:PIA03505.jpg
PIA03505.jpg (500 × 500 pixel, dimensione del file: 10 KB, tipo MIME: image/jpeg)
 |
Questo file e la sua pagina di descrizione (discussione · modifica) si trovano su Wikimedia Commons (?) |
| Descrizione |
This very long exposure was taken by NASA's Deep Space 1 to show detailed structures in the faint parts of comet Borrelly's inner coma. As a result, the nucleus has been greatly over-exposed and its shape appears distorted. The main jet extends to the lower right about 30 degrees off the Sun-line. Faint structures in the coma stretch from the nucleus in all directions. The surface of Borrelly is composed of a mixture of dust and water ice, and as the comet approaches the Sun the ice sublimes. Dust carried outward by expanding gas makes the jets visible. Deep Space 1 completed its primary mission testing ion propulsion and 11 other advanced, high-risk technologies in September 1999. NASA extended the mission, taking advantage of the ion propulsion and other systems to undertake this chancy but exciting, and ultimately successful, encounter with the comet. More information can be found on the Deep Space 1 home page at http://nmp.jpl.nasa.gov/ds1/ . Deep Space 1 was launched in October 1998 as part of NASA's New Millennium Program, which is managed by JPL for NASA's Office of Space Science, Washington, D.C. The California Institute of Technology manages JPL for NASA. |
| Fonte | http://photojournal.jpl.nasa.gov/mission/DS1?start=0 |
| Autore | NASA/JPL-Caltech/UMD |
| Licenza (Riusare questo file) |
Original work of NASA - public domain |
|
Questo file è nel pubblico dominio perché creato dalla NASA. La politica sul copyright della NASA afferma che «il materiale della NASA non è protetto da copyright a meno che non sia specificato altrimenti». (NASA copyright policy e JPL Image Use Policy). |  |
 |
Attenzione:
|
Cronologia del file
Fare clic su un gruppo data/ora per vedere il file come si presentava nel momento indicato.
| Data/Ora | Miniatura | Dimensioni | Utente | Commento | |
|---|---|---|---|---|---|
| attuale | 04:20, 16 mag 2007 | | 500 × 500 (10 KB) | Clh288~commonswiki | {{Information |Description=This very long exposure was taken by NASA's Deep Space 1 to show detailed structures in the faint parts of comet Borrelly's inner coma. As a result, the nucleus has been greatly over-exposed and its shape appears distorted. The |
Pagine che usano questo file
La seguente pagina usa questo file:
Utilizzo globale del file
Anche i seguenti wiki usano questo file:
- Usato nelle seguenti pagine di ru.wikipedia.org:
