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- TL;DR Summary
- what did Georges Lemaître do? What did he suppose? What did he solve?

[ Wikipedia quote ] Georges Lemaître first noted in 1927 that an expanding universe could be traced back in time to an originating single point, which he called the "primeval atom".

Exactly what did Georges Lemaître do? What did he suppose? What did he solve?

Did Lemaître think the universe was finite or infinite?

Did Lemaître think his primeval atom had a size? Points don't have size. Originating single points don't have size. Did he think his atom was a point?

[ Wikipedia quote ] According to the Big Bang theory, the universe at the beginning was very hot and very small, and since then it has been expanding and cooling down.

Once the infinite sized universe was very small? What is small infinity?

Exactly what did Georges Lemaître do? What did he suppose? What did he solve?

Did Lemaître think the universe was finite or infinite?

Did Lemaître think his primeval atom had a size? Points don't have size. Originating single points don't have size. Did he think his atom was a point?

[ Wikipedia quote ] According to the Big Bang theory, the universe at the beginning was very hot and very small, and since then it has been expanding and cooling down.

Once the infinite sized universe was very small? What is small infinity?