Portrait of astrophysicist Arno Penzias
Numéro d’image : 12066573
| American astrophysicist Arno Penzias (born 1933),co-discoverer of the 3 Kelvin microwave background radiation. Gamow & Herman's hypothesis of 1948 predicted that radiation released in the "big bang" should have cooled to a present-day temperature of around 5 Kelvin. In 1964,Penzias & Robert Wilson detected unexpected noise during a radio survey of the Milky Way. The signal strength was equal in all directions & corresponded to that emitted by a black body at 3.5 Kelvin. Their discovery is considered as some of the strongest evidence for the big bang theory for the origin of the universe. Penzias & Wilson were awarded the Nobel Prize in Physics in 1978 | |
| Licence : | Droits gérés |
| Crédit: | Science Photo Library / Morgan, Hank |
| Taille de l’image : | 2516 px × 3633 px |
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