Early history of the universe. Artwork showing the cooling and expansion of the early universe from its origin in the Big Bang (upper left). The first stage (orange area) is a mixture of protons (blue balls),neutrons (yellow balls) and light photons (yellow arrows). The following four stages (seen from left to right as curved bands) are: a line of hydrogen and helium atoms (379,000 years); the universe becoming transparent to radiation (the straight lines of light); the formation of the first stars (400 million years) and gas clouds (blue area); and the formation of the galaxies (final band,with galaxies shown) | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Dalhoff, Henning |
Bildgröße: | 2300 px × 4060 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |