Astrophysicist Kip Thorne dared to dream of a machine to find gravitational waves.

Think Big

The Detection of Gravitational Waves Was a Scientific Breakthrough, but What’s Next?

Scientists are sitting on top of the world after this monumental discovery and are eager to keep exploring the universe

Think Big

The Theory of Relativity, Then and Now

Albert Einstein's breakthrough from a century ago was out of this world. Now it seems surprisingly down-to-earth

Think Big

Why String Theory Still Offers Hope We Can Unify Physics

Evidence that the universe is made of strings has been elusive for 30 years, but the theory's mathematical insights continue to have an alluring pull

Less than a mile from the South Pole, the Dark Sector Lab’s Bicep2 telescope (at left) searches for signs of inflation.

Listening to the Big Bang

Just-reported ripples in space may open a window on the very beginning of the universe

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