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NPR
Science
C.V. Vishveshwara in 2007 in Oak Park, Illinois.

C.V. Vishveshwara's Revolutionary Black Hole Research Turns 50

Dec 29, 2020
Before scientists were even sure black holes existed, an Indian astrophysicist did the math behind Einstein's predictions of what would happen if two black holes collided.
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NPR
Science
Rich Isaacson, seen in his backyard in Pentagon City, Va., wrote his thesis on gravitational waves and says he always thought their existence would be proved sometime during his career. But he didn't realize that trying to see them would become his caree

Billion-Dollar Gamble: How A 'Singular Hero' Helped Start A New Field In Physics

May 19, 2019
In the 1970s, Rich Isaacson was presented with what seemed like a crazy idea: using lasers to detect gravitational waves. It became the biggest project the National Science Foundation had ever funded.
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NPR
Space
Scientist Corey Gray and his mother, Sharon Yellowfly, are pictured at one of the two massive detectors that make up the Laser Interferometer Gravitational-Wave Observatory. One facility, where Gray works, is in Washington state, and the other is in Loui

How A Cosmic Collision Sparked A Native American Translator's Labor Of Love

Mar 31, 2019
On April 1, astronomers will start two huge machines and continue hunting for ripples in space-time. One scientist gets his mom to translate news of each discovery into her native language, Blackfoot.
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NPR
Science
The Laser Interferometer Gravitational-Wave Observatory is made up of two detectors, this one in Livingston, La., and one near Hanford, Wash. The detectors use giant arms in the shape of an "L" to measure tiny ripples in the fabric of the universe.

Massive U.S. Machines That Hunt For Ripples In Space-Time Just Got An Upgrade

Mar 19, 2019
The twin sites in the Laser Interferometer Gravitational-Wave Observatory are about to go back online. New hardware should make them able to sense more colliding black holes and other cosmic events.
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NPR
13.7: Cosmos And Culture
The original historical documents related to Albert Einstein's prediction of the existence of gravitational waves are seen at the Hebrew University in Jerusalem on Feb. 11, 2016.

How Do Gravitational Waves Really Work?

Nov 07, 2017
Gravitational waves — ripples in the fabric of space-time — are a big deal in the world of science. Here's a video that helps explain how they work.
NPR
13.7: Cosmos And Culture
David Reitze of the California Institute of Technology and the executive director of the Laser Interferometer Gravitational-Wave Observatory, or LIGO, speaks at the National Press Club in Washington on Oct. 16. He talks of one of the most violent events

A New Era For Astronomy Has Begun

Oct 18, 2017
Astronomy is forever changed by the viewing of the collision of neutron stars; we can now watch these processes in many different ways as they run their course, says astrophysicist Marcelo Gleiser.
NPR
The Two-Way
Gravitational wave observatories, like this one in Italy, use giant arms to measure tiny ripples in the fabric of space-time.

Astronomers Strike Gravitational Gold In Colliding Neutron Stars

Oct 16, 2017
In an astonishing discovery, astronomers used gravitational waves to locate two neutron stars smashing together. The collision created 200 Earth masses of pure gold, along with other elements.
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NPR
13.7: Cosmos And Culture
Laser Interferometer Gravitational-Wave Observatory (LIGO) co-founders Rainer Weiss (left) and Kip Thorne appear during a news conference at the National Press Club in Washington, D.C., on Feb. 11, 2016.

Nobel Winners' Work In Physics Began With Albert Einstein

Oct 03, 2017
Three scientists won the prize after a 25-year-long search of the cosmos for gravitational waves — the waving of space — the one test missing for Einstein, says astrophysicist Marcelo Gleiser.
NPR
The Two-Way
The Laser Interferometer Gravity-Wave Observatory measures tiny changes in the length of its 2.5-mile-long arms. There are two detectors: one in Washington state and one in Louisiana (pictured).

Gravitational Waves From Colliding Black Holes Shake Scientists' Detectors Again

Jun 15, 2016
For the second time in recent months, scientists say they have picked up distortions in space and time. The find suggests smaller-sized black holes may be more numerous than many scientists thought.
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NPR
The Two-Way
The Laser Interferometer Gravity-Wave Observatory measures tiny changes in the lengths of each of its 2.5-mile-long arms. The arms stretch and squeeze as gravity waves pass by.

Einstein, A Hunch And Decades Of Work: How Scientists Found Gravitational Waves

Feb 12, 2016
Behind the headlines and news conferences announcing the discovery were decades of hard work, hundreds of scientists and more than a billion dollars in taxpayer funds.
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NPR
The Two-Way
The Laser Interferometer Gravity-Wave Observatory measures tiny changes in the lengths of each of its 2.5-mile-long arms. The arms stretch and squeeze as gravity waves pass by.

In Milestone, Scientists Detect Gravitational Waves As Black Holes Collide

Feb 11, 2016
A U.S.-led team says it has seen waves in space-time from two black holes merging together. It is the first time humanity has directly detected such waves.
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