Boomerang Nebula. Coloured visible light image of the Boomerang Nebula,the coolest region of the Universe yet discovered in 1997. The colour-codes are: blue representing the faintest and coldest regions,through to yellow,red and white increas- ingly brighter hotter regions. The two lobes of gas and dust (yellow/pale blue) have a temperature of about 1 Kelvin (-272 Celsius). This temperature is due to cooling from expanding gas clouds. The small white rectangle at centre covers light from a central star at the end of its life. It has thrown off the gas here,and will become a white dwarf. Image made through a V-band filter by the European ESO NTT telescope,La Silla,Chile | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / NASA |
Taille de l’image : | 3780 px × 4721 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |