BIG BANG OR BIG BOUNCE? STEPHEN HAWKING AND OTHERS PEN ANGRY LETTER ABOUT HOW THE UNIVERSE BEGAN

[Judi Lynn]

BY HANNAH OSBORNE ON 5/12/17 AT 7:32 AM


Stephen Hawking and 32 of his fellow scientists have written an angry letter responding to a recent Scientific American article about how the universe began. In it, they declare their “categorical disagreement” with several of the statements made, and explain why the theory of inflation is still one of the best models for the origin of the cosmos.

The article in question was published in February. Titled “Pop Goes the Universe,” physicists Anna Ijjas, Paul J. Steinhardt, Abraham Loeb examine the latest measurements from the European Space Agency relating to cosmic microwave background (CMB).

CMB is the oldest light in the universe—light emitted just after the Big Bang around 13.7 billion years ago. In 2013, a map of the CMB appeared to show how the universe inflated extremely fast, before settling down to become the universe we see today. This, many experts said, backed up models relating to inflation theories, where the universe expanded exponentially fast a fraction of a second after the Big Bang.

However, Ijjas, Steinhardt and Loeb disagreed with this interpretation. “If anything, the Planck data disfavored the simplest inflation models and exacerbated long-standing foundational problems with the theory, providing new reasons to consider competing ideas about the origin and evolution of the universe,” they write.

More:
http://www.newsweek.com/big-bang-stephen-hawking-origin-universe-608104