Surprise: the Big Bang Isn’t the Beginning of the Universe Anymore | Portside

Surprise: the Big Bang Isn’t the Beginning of the Universe Anymore | Portside: KEY TAKEAWAYS The Big Bang teaches us that our expanding, cooling universe used to be younger, denser, and hotter in the past. However, extrapolating all the way back to a singularity leads to predictions that disagree with what we observe. Instead, cosmic inflation preceded and set up the Big Bang, changing our cosmic origin story forever.