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In briefA one-minute clip from Richard Feynman's 1979 Auckland lecture in which he answers whether you see an object or only its light. It is a short, playful take on perception and on the use of philosophy.
In briefNASASpaceflight's 24/7 live stream from SpaceX's Starbase in Boca Chica, Texas, showing Starship and Super Heavy development, testing and launches.
In briefScott Manley surveys the research on whether people can adapt to rotating artificial gravity, from early Soviet centrifuge tests to modern studies. He concludes it is an engineering problem and discusses Coriolis effects and station radius.
In briefA minutephysics explainer on the twins paradox in special relativity. It shows why the traveling twin ends up younger and how acceleration resolves the paradox.
In briefPBS Space Time explains how spacetime geometry and light cones determine the order of events and what can cause what. It visualizes causality in special relativity.
In briefCorning's 2011 concept video showing a future where specialty glass surfaces and touchscreens are woven into everyday life.
In briefThe full webcast of SpaceX's Falcon 1 Flight 4, the first privately developed liquid-fueled rocket to reach orbit, on 28 September 2008. It includes the crew's cheering and Elon Musk's statement afterward.
In briefSabine Hossenfelder explains why she thinks faster-than-light travel may not be ruled out. She argues that the standard objections from special relativity are inconclusive.
In briefPBS Space Time explains the Standard Model Lagrangian, the single equation encapsulating the particle physics theory, and visualizes what its terms mean.
In briefTim Dodd of Everyday Astronaut talks with Elon Musk right after Musk's 2019 Starship presentation. Musk discusses Starship's design, why SpaceX favors conventional engines over aerospikes, and how deleting parts and processes speeds up development.
In briefA short compilation of aircraft flying through clouds and moist air, showing the spiraling vortices that wings leave behind. The footage shows wingtip vortices and the way planes disturb cloud layers.
In briefA short minutephysics video explaining why bicycles stay upright. It looks at gyroscopic precession, head angle and centre of mass, and shows that bikes self-steer toward the direction they lean.
In briefKurzgesagt explains the black hole bomb and how far-future civilizations might extract energy from spinning black holes, including Dyson-sphere-style ideas.
In briefSabine Hossenfelder explains superdeterminism as an interpretation of quantum mechanics, addressing common objections and misconceptions, including the worry that it kills free will or science. She ties it to Bell's theorem and hidden variables.
In briefA 43-minute skeptical critique arguing that Starlink fails to live up to its promises, covering satellite lifespan, costs, bandwidth and viability. The creator later added an update about FCC grant requirements.
In briefSped-up onboard camera footage of the Falcon 9 first stage landing on a drone ship during the THAICOM 8 mission on May 27, 2016. It shows the descent from grid fin deployment to touchdown.
In briefPatrick Boyle examines SpaceX's planned IPO at a roughly $1.75 trillion valuation. He covers the merging of other Musk companies, orbital data center claims and the fast-track index rules that may help the listing.
In briefA TED conversation with SpaceX president Gwynne Shotwell about the company's race to put people in orbit and the BFR rocket. It also covers the idea of using the rocket for fast point-to-point travel on Earth.
In briefPBS Space Time, together with It's Okay to be Smart and PBS Eons, asks how a universe drifting toward disorder produced something as complex as life. It presents the idea that the laws of physics, through thermodynamics, may actually favor the emergence of life.
In briefPBS Space Time explains Roger Penrose's conformal cyclic cosmology, in which the far future of our universe becomes the big bang of the next. It explores what could come after the universe ends.
In briefEveryday Astronaut's guide to visiting Starbase, Texas to see Starship, covering what and where it is, which areas close during launches, where to watch from, where to fly into and stay, and things to do.
In briefEEVblog interviews Richard Stephenson of NASA's Canberra Deep Space Communications Complex about how the 70m DSS-43 dish is used to contact Voyager 2. It covers the ground antenna and low-noise receiver side of deep space communication. This is a 2023 re-release of a 2017 video.
In briefPBS Space Time episode on the black hole information paradox, covering how black holes seem to destroy information, the no-hair conjecture and the proposed role of the event horizon. It is part of a series on black holes.
In briefA four-pane view of Armadillo Aerospace's Mod vehicle on a June 2010 boosted hop. The flight includes engine shutdown, drogue chute deployment, an engine restart and a safe landing.
