Gravitational Waves Explained in Simple Words
Science ABC
Aug 25, 2026 11:00
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Chapters
What are gravitational waves — and how do ripples in spacetime let us "hear" black holes collide a billion light-years away? In simple words, this animated explainer covers what gravitational waves are, what creates them, Einstein's 1916 prediction, and how LIGO finally detected them in 2015.
Whether you're a curious student, a physics enthusiast, or just someone who looked up at the night sky and wondered how we listen to the universe, this video breaks it all down from first principles.
CHAPTERS:
WATCH NEXT:
▶ Spacetime Explained – https://youtu.be/3khY_bwf5FY
▶ Time Dilation (Einstein's Relativity) – https://youtu.be/yuD34tEpRFw
▶ Cosmic Microwave Background – https://youtu.be/_NGa6dRW-oA
KEY TOPICS COVERED:
• What gravitational waves are — ripples in the fabric of spacetime
• The pebble-in-a-lake analogy for how they spread
• What generates them: supernovae, orbiting stars, black hole mergers
• How massive moving objects distort spacetime at the speed of light
• Einstein's 1916 prediction from general relativity
• The 1974 Hulse–Taylor binary pulsar, the first indirect evidence
• Why gravitational waves are so weak and hard to detect
• LIGO's landmark 2015 direct detection of colliding black holes
• How they reveal masses, spins, and distances light can't show us
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REFERENCES:
https://www.ligo.caltech.edu/page/what-are-gw
https://spaceplace.nasa.gov/gravitational-waves/en/
https://www.nasa.gov/universe/nsfs-ligo-has-detected-gravitational-waves/
https://science.nasa.gov/mission/ligo/
https://www.nobelprize.org/prizes/physics/2017/summary/
Voice Over: John Staughton (https://www.fiverr.com/jswildwood)
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