Expanding universe. Illustration showing the universe expanding over time (direction shown by arrow). Matter formed after the Big Bang,the initial expansion of the universe from an infinitely compact state 12-15 billion years ago. Around 100 million years after the Big Bang,the first stars and galaxies formed. On the largest scale,the galaxies are observed to be moving away from each other. This is due to the expansion of the universe. A common analogy is to imagine the universe and its galaxies as being contained on the surface of an expanding bubble | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Jensen, Mikkel Juul |
Taille de l’image : | 5500 px × 3663 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |