What are gravitational waves?

prof brian green gravitational waves explained cnni mann intv_00034625.jpg

What are gravitational waves?

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The detection of gravitational waves is a major discovery in astrophysics that reinforces the genius of Albert Einstein. Professor of physics Brian Greene explains.

04:46 - Source: CNN

Amazing discoveries of the 2010s 22 videos

prof brian green gravitational waves explained cnni mann intv_00034625.jpg

What are gravitational waves?

04:46

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On the heels of the discovery of the oldest human remains ever found outside of Africa, here are some other fascinating archaeological finds of the past few years.

Five amazing finds from the ancient world

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Exoplanets named after beer

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First preserved dinosaur tail found

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NASA's record-breaking planet discovery

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A photo illustration shows the first interstellar asteroid: `Oumuamua. This unique object was discovered on 19 October 2017 by the Pan-STARRS 1 telescope in Hawai`i. Subsequent observations from ESO's Very Large Telescope in Chile and other observatories around the world show that it was travelling through space for millions of years before its chance encounter with our star system. `Oumuamua seems to be a dark red highly-elongated metallic or rocky object, about 400 metres long, and is unlike anything normally found in the Solar System.

Here is the first observed interstellar object in solar system

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Neutrons collide 3

Star collision scatters gold and platinum (2017)

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Expedition 46 Commander Scott Kelly of NASA rest in a chair outside of the Soyuz TMA-18M spacecraft just minutes after he and Russian cosmonauts Mikhail Kornienko and Sergey Volkov of Roscosmos landed in a remote area near the town of Zhezkazgan, Kazakhstan on Wednesday, March 2, 2016 (Kazakh time). Kelly and Kornienko completed an International Space Station record year-long mission to collect valuable data on the effect of long duration weightlessness on the human body that will be used to formulate a human mission to Mars. Volkov returned after spending six months on the station. Photo Credit: (NASA/Bill Ingalls)

Space travel altered Kelly's chromosomes

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Origin of 'ghost particle' found

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Cassini's biggest moments and discoveries

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The Event Horizon Telescope (EHT) -- a planet-scale array of eight ground-based radio telescopes forged through international collaboration -- was designed to capture images of a black hole. Today, in coordinated press conferences across the globe, EHT researchers reveal that they have succeeded, unveiling the first direct visual evidence of a supermassive black hole and its shadow. This breakthrough was announced in a series of six papers published in a special issue of The Astrophysical Journal Letters. The image reveals the black hole at the center of Messier 87, a massive galaxy in the nearby Virgo galaxy cluster. This black hole resides 55 million light-years from Earth and has a mass 6.5-billion times that of the Sun.

How the first photo of a black hole was captured

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Hiding in plain sight

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Scientists confirm 'God Particle' exists

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What is an exoplanet?

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NASA's new evidence on ocean worlds

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Could humans live on newly discovered exoplanet?

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Scientists extract woolly mammoth blood

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Liquid body fluids have been found inside a prehistoric 42,000 year old foal.

Liquid blood and urine found inside 42,000-year-old foal

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Homo naledi: Scientists find ancient human relative

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Got allergies? You can blame the Neanderthals

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Organic matter found on Mars

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Evidence of water on Mars

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