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Special Report

The Discovery of Gravitational Waves

All you need to know about the ripples in spacetime detected by LIGO

  • February 14, 2016

Gravitational Waves Found: Kip Thorne Explains

Scientific American's Josh Fischman talks with renowned astrophysicist and general relativity expert Kip Thorne about the discovery of gravitational waves by the LIGO Project, co-founded by Thorne.

February 11, 2016 — Josh Fischman and Steve Mirsky

Watch How Gravitational Waves Dance across the Universe

LIGO scientist David Reitze takes us on a 1.3 billion year journey that begins with the violent merger of two black holes in the distant universe. The event produced gravitational waves, tiny ripples in the fabric of space and time, which LIGO detected as they passed Earth on September 14, 2015.

February 11, 2016

Not All Gravitational Waves Are Created Equal

The LIGO experiment hunts for gravitational waves that are different from those sought by BICEP2. Although both types are elusive, they differ in age and strength—and come from very different places

January 14, 2016 — Clara Moskowitz
Gravitational Wave Detectors Get Ready to Hunt for the Big Bang

Gravitational Wave Detectors Get Ready to Hunt for the Big Bang

As scientists prepare to catch their first gravitational waves, attention is turning to devices that will let astronomers peek into the invisible interiors of black holes and observe the forbidden, early history of time

October 1, 2013 — Ross D. Andersen
Gravitational Wave Rumors in Overdrive

Gravitational Wave Rumors in Overdrive

Physicists say they've heard that the LIGO observatory may have spotted the signature of merging black holes

January 13, 2016 — Davide Castelvecchi and Nature magazine