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The Great American Eclipse 2017
October 8, 2026 · 6 minGet ready! On August 21st 2017, Americans will be treated to a rare total Solar eclipse. From coast to coast, everyone in the US should be able to see at least a partial eclipse and be within a day's drive of catching the total eclipse…
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A Real Tractor Beam
October 8, 2026 · 7 minNYU Professor of Physics, David Grier, dropped in to tell us about his team's amazing work building the world's first real life tractor beam. Just like Star Trek, he explains how their light beam pulls things toward it, how it works and…
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Are Dyson Spheres Physically Possible?
October 8, 2026 · 24 minUse code coolworlds at https://incogni.com/coolworlds to get an exclusive 60% off an annual Incogni plan.The idea of Dyson Spheres was a radical proposal by the physicist Freeman Dyson, an enormous shell of material enveloping a star…
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Alien signal received from HD 164595?
October 8, 2026 · 5 minDr Seth Shostak, Senior Astronomer of the SETI Institute, was at the New England Fall Astronomy Festival with me last week and I took the opportunity to ask him about the news reports of a SETI signal detected in Russia from the star HD…
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Do "Grabby Aliens" Solve The Fermi Paradox?
October 8, 2026 · 26 minThanks to Storyblocks for sponsoring this video! Download unlimited stock media at one set price with Storyblocks: https://www.storyblocks.com/CoolWorldsThere are many possible solutions to the Fermi Paradox but a few have risen to…
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The Question That Keeps Me Awake At Night
October 8, 2026 · 26 minThe most fundamental question we can ever ask: Why is something rather than nothing? Not nothing as in no particles or no energy, but nothing as in no space, no time, no laws of physics at all. This is a question that has haunted me for…
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The Signatures of Alien Life… or Not | Tiffany Jansen
October 8, 2026 · 7 minAstronomers are finding habitable exoplanets everywhere! We are now starting to think about the next step, how can we use our telescopes to look for signs of life on distant worlds? Cool Worlds Lab astronomer Tiffany Jansen talks about…
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Climate Emergency? Global Sea Ice at Anomalously Low Levels
October 8, 2026 · 8 minThis week a plot showing the global sea ice over time went viral due to shockingly low levels, smashing previous records. The plot was so weird that we decided to check out the data for ourselves and see if it was legit. Indeed, we can…