If Light has ZERO mass... why can't it escape the gravity of a Black Hole? | Neil deGrasse Tyson

In the voice of Neil deGrasse Tyson, this episode tackles a paradox that has confused millions: light has zero mass, so why can't it escape the gravity of a black hole? The question smuggles Newton into Einstein's universe — and the answer rewires what you think gravity even is. Gravity is not a rope pulling on mass; it is the curvature of spacetime itself, and light must travel whatever road the universe paves. We trace the history honestly: John Michell's 1783 "dark stars" and why a Newtonian black hole is the wrong picture, then Einstein's real mechanism — light follows the straightest possible paths through curved space, and inside the event horizon every path, even the one labeled "outward," points inward. Your light cone tips over. The photon sphere shows light literally orbiting the hole. And the singularity is not a place ahead of you, but a time ahead of you. Along the way we separate honest puzzles from fake paradoxes — escape velocity above the speed of light, gravitational redshift stretched to infinity, and what Hawking added to the story — and close with the strangest truth of all: inside a black hole there is no "out" to travel to. Subscribe for more journeys where physics breaks your intuition and rebuilds it better. Timestamps 00:00 ⚫ The Massless Prisoner 04:30 🍎 Newton's Wrong Question 09:00 🌑 Michell's Dark Stars 13:30 🌌 Einstein Bends The Road 18:00 ⬇️ Every Road Leads Inward 22:00 🔄 Light Orbiting Itself 25:30 ⏳ The Center Is A Time 28:30 🔍 No Out To Travel Related SEO Searches can light escape a black hole, why does gravity affect massless light, photon sphere black hole explained, event horizon explained simply, john michell dark star 1783, does light have mass physics, gravitational redshift infinite explained, why light cannot escape black hole, singularity is a time not a place, black hole escape velocity greater than light Alternative SEO Titles If Light Has No Mass Why Can't It Escape a Black Hole?, Neil deGrasse Tyson: Light Trapped by Gravity, The Photon's Prison: Escape From a Black Hole, Why Gravity Bends Massless Light, Dark Stars: The 1783 Prediction of Black Holes, Inside the Event Horizon: No Way Out, The Photon Sphere: Where Light Orbits Itself, Your Light Cone Tips Over, Escape Velocity Faster Than Light Speed, Why the Singularity Is a Time Not a Place Keywords neil degrasse tyson, black hole, light, photons, massless light, photon mass, why light cannot escape black hole, event horizon, event horizon explained, general relativity, spacetime curvature, geodesics, gravity, john michell, dark stars, photon sphere, light cone, singularity, escape velocity, gravitational redshift, infinite redshift, schwarzschild radius, einstein, einstein field equations, newtonian gravity vs einstein, hawking radiation, hawking, cosmology, astrophysics, relativity explained, light speed limit, speed of light, tidal forces, space time, physics paradox, science communication, cosmic perspective Hashtags #NeilDeGrasseTyson, #BlackHole, #Light, #Photons, #MasslessLight, #PhotonMass, #EventHorizon, #GeneralRelativity, #SpacetimeCurvature, #Geodesics, #Gravity, #JohnMichell, #DarkStars, #PhotonSphere, #LightCone, #Singularity, #EscapeVelocity, #GravitationalRedshift, #SchwarzschildRadius, #Einstein, #NewtonianGravity, #HawkingRadiation, #StephenHawking, #Cosmology, #Astrophysics, #RelativityExplained, #SpeedOfLight, #TidalForces, #Spacetime, #PhysicsParadox, #ScienceCommunication, #CosmicPerspective, #Physics, #Astronomy, #Universe, #SpaceScience, #Science Copyright Disclaimer Copyright Disclaimer Under section 107 of the copyright Act 1976, allowance is made for FAIR USE for purposes such as criticism, comment, news reporting, teaching, scholarship and research. Fair use is a use permitted by copyright statutes that might otherwise be infringing. Non-Profit, educational or personal use tips the balance in favor of FAIR USE.