Emission nebula NGC 281,optical image. This is a huge cloud of gas and dust in which stars are forming. Radiation from the hot newborn stars ionises the hydrogen in the nebula,causing it to emit pink light. Silhouetted against the bright nebula are several small,tight blobs known as Bok globules. These are dense regions of gas and dust in the latter stages of the process of star formation. Inside them,material is getting hot enough and dense enough to begin the nuclear reactions characteristic of stars. This nebula lies around 10,000 light years from Earth in the constellation Cassiopeia | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Gendler, Robert |
Taille de l’image : | 3136 px × 2392 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |