Synonyms that are in the dictionary are marked in green. Synonyms that are not in the dictionary are marked in red.
Antonyms that are in the dictionary are marked in green. Antonyms that are not in the dictionary are marked in red.
In order to explain the fact that the universe today looks roughly similar everywhere, the physicist Alan Guth proposed in 1981 that the early universe underwent a period of accelerated expansion.
Source: https://theconversation.com/the-multiverse-how-were-tackling-the-challenges-facing-the-theory-201729
This concept, known as, was developed in the 1980s, primarily by the physicists Alan Guth, Andrei Lind and Paul Steinhardt.
Source: https://www.discovermagazine.com/the-sciences/how-did-the-universe-begin