Active galaxy NGC 7742. Hubble space telescope (HST) optical image of the active spiral galaxy NGC 7742. This is an example of a Seyfert galaxy,which have a highly energetic nucleus with an energy output comparable to that of quasars. The nucleus of this galaxy contains a powerful emitter of X-rays. NGC 7742 lies 72 million light years away in the constellation Pegasus. This image was taken on July 9 1995 | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / HUBBLE HERITAGE TEAM / STSCI / ESA / NASA |
Taille de l’image : | 3543 px × 3391 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |