File:Pair of eclipsing brown dwarfs.jpg
Vai alla navigazione
Vai alla ricerca
Dimensioni di questa anteprima: 613 × 600 pixel. Altre risoluzioni: 245 × 240 pixel | 490 × 480 pixel.
File originale (800 × 783 pixel, dimensione del file: 84 KB, tipo MIME: image/jpeg)
Dettagli
| Descrizione | This is an artist's concept of a pair of eclipsing brown dwarfs. Brown dwarfs are mysterious celestial objects that fall somewhere between the smallest stars and the largest planets. They have always been viewed by astronomers as a critical link in the understanding of how both stars and planets form. One problem has been that brown dwarfs are hard to find and so have defied nearly all attempts to accurately assess their size. But now astronomers, have discovered a pair of young brown dwarfs in mutual orbit. This has enabled scientists to weigh and measure the diameters of brown dwarfs for the first time. The new observations confirm the theoretical prediction that brown dwarfs start out as star-sized objects, but shrink and cool and become increasingly planet sized as they age. Before now, the only brown dwarf whose mass had been directly measured was much older and dimmer. |
| Data | |
| Fonte | http://hubblesite.org/newscenter/archive/releases/star/2006/11/ |
| Autore | NASA, ESA, and A. Feild (STScI) |
| Licenza (Riusare questo file) |
http://hubblesite.org/copyright/ |
Licenza
|
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 | 23:11, 15 nov 2006 | | 800 × 783 (84 KB) | wikimediacommons>Winiar | {{Information |Description=This is an artist's concept of a pair of eclipsing brown dwarfs. Brown dwarfs are mysterious celestial objects that fall somewhere between the smallest stars and the largest planets. They have always been viewed by astronomers a |
Utilizzo del file
La seguente pagina usa questo file:
