Quasar PG2112 059
Numéro d’image : 12000491
| Dusty grains,including tiny specks of the minerals found in the gemstones peridot,sapphires and rubies,can be seen blowing in the winds of a quasar,or active black hole,in this artist's concept. Astronomers using NASA's Spitzer Space Telescope found evidence that such quasar winds might have forged these dusty particles in the very early universe. Using Spitzer's infrared spectrograph instrument,scientists found a wealth of dust grains in a quasar called PG2112 059 located at the centre of a galaxy 8 billion light-years away. The grains,which include corundum (sapphires and rubies) forsterite (peridot) and periclase (naturally occurring in marble),are not typically found in galaxies without quasars,suggesting they might have been freshly formed in the quasar's winds | |
| Licence : | Droits gérés |
| Crédit: | Science Photo Library / NASA |
| Taille de l’image : | 3000 px × 2400 px |
| Model Release : | Non requis |
| Property Release : | Non requis |
| Restrictions : |
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