Watch The Moment A Scientist Gets Told His Life's Work Has Been Proven Right
Thirty years ago, Professor Andrei Linde had a theory. This is how he found out that it's now one step closer to being a fact.
Linde is one of the fathers of the "inflationary universe" theory - a key part of modern physics.
Despite its importance, until yesterday's gravitational waves announcement, we'd only had indirect evidence to support Linde's work - there was no direct proof.
Kallosh initially thought that the knock on the door was a delivery - and asked if Linde had ordered anything. "I ordered it thirty years ago, finally it arrived..." he joked afterwards.
Linde says: "If this is true, this is a moment of understanding of nature of such magnitude that it just overwhelms."
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