Flat,closed and open universes. Artwork showing the geometrical curvatures of a 'flat' (left),'closed' (centre) and 'open' (right) universe. The curved grid represents the overall geometry. The universes have planar,spherical and saddle curvatures respectively. The curvature of a universe is determined by the amount and density of matter and energy. In an open universe,the amount of matter is insufficient to prevent the universe expanding forever. In a closed universe,there is enough matter to halt the expansion,followed by a contraction to a Big Crunch. In a flat universe,the amount of matter has a critical value between these two extremes | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Jensen, Mikkel Juul |
Bildgröße: | 5740 px × 1523 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |