New Images Support ‘Big Bang’ Theory
Scientists said yesterday they have found the best evidence yet supporting the theory that about 13.7 billion years ago, the universe suddenly expanded from the size of a marble to the size of the cosmos in less than a trillionth of a second.
A team of researchers used data collected by a NASA satellite measuring microwave radiation to offer direct, experimental support for the theory of “inflation” put forth 25 years ago — that the expansion of the universe, commonly known as the “big bang,” began with a single burst of repulsive energy acting in a tiny fraction of time. The expansion continues today but at a much slower rate.
“We can measure the sky to tell what powered this expansion,” said Goddard Space Flight Center astrophysicist Gary Hinshaw. “It’s really amazing, actually. I was in graduate school when the theory was first proposed, and I’ve been working on it ever since. It’s gratifying to see the idea hold up now.”
New Images Support ‘Big Bang’ Theory