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We are Big Idea Hunters…

We live in a time of information abundance, which far too many of us see as information overload. With the sum total of human knowledge, past and present, at our fingertips, we’re faced with a crisis of attention: which ideas should we engage with, and why? Big Think is an evolving roadmap to the best thinking on the planet — the ideas that can help you think flexibly and act decisively in a multivariate world.

A word about Big Ideas and Themes — The architecture of Big Think

Big ideas are lenses for envisioning the future. Every article and video on bigthink.com and on our learning platforms is based on an emerging “big idea” that is significant, widely relevant, and actionable. We’re sifting the noise for the questions and insights that have the power to change all of our lives, for decades to come. For example, reverse-engineering is a big idea in that the concept is increasingly useful across multiple disciplines, from education to nanotechnology.

Themes are the seven broad umbrellas under which we organize the hundreds of big ideas that populate Big Think. They include New World Order, Earth and Beyond, 21st Century Living, Going Mental, Extreme Biology, Power and Influence, and Inventing the Future.

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Big Think’s contributors offer expert analysis of the big ideas behind the news.

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Big Think’s Edge learning platform for career mentorship and professional development provides engaging and actionable courses delivered by the people who are shaping our future.

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The Universe May Not Be Expanding

July 17, 2013, 5:04 PM
Digitaluniverse

How do we know the universe is expanding?

Albert Einstein's theory of General Relativity posits one of two possibilities: the universe is either expanding or contracting. It can't be static. Thanks to Edwin Hubble and every sophisticated instrument available since 1929, we know that most galaxies are moving away from us, and appear to be moving away from us faster and faster. The galaxies themselves are not getting larger, but the distance between the galaxies grows, like raisins on a rising loaf of bread. Another analogy is to think of the universe as an expanding balloon

Not so fast, says Christof Wetterich, a theoretical physicist at the University of Heidelberg in Germany, who has just published an alternative explanation. The universe may be static, but the mass of everything is growing exponentially. Wetterich's paper hasn't yet been peer-reviewed. Moreover, his idea can't even be tested.

However, according to Nature, no one is dismissing Wetterich out of hand. The physicist Arjun Berera at the University of Edinburgh, for one, likes the idea because it will keep scientists from getting too comfortable with one single explanation, so that they might "see if there are alternative explanations consistent with all known observation.”

Read more here

Image courtesy of Shutterstock

 

The Universe May Not Be Exp...

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