The stars and galaxies we see today didn’t always exist, and the farther back we go, the closer to an apparent singularity the Universe gets, but there is a limit to that extrapolation. To go all the way back, we need a modification to the Big Bang: cosmological inflation. Image credit: NASA, ESA, and A. Feild (STScI).

Inflation Isn’t Just Science, It’s The Origin Of Our Universe

One of cosmic inflation’s cofounders came out against it, calling it not even science. But it is… and so much more.

Ethan Siegel
8 min readOct 12, 2017

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“There’s no obvious reason to assume that the very same rare properties that allow for our existence would also provide the best overall setting to make discoveries

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Ethan Siegel
Starts With A Bang!

The Universe is: Expanding, cooling, and dark. It starts with a bang! #Cosmology Science writer, astrophysicist, science communicator & NASA columnist.