PBS Space Time

This episode explores the discovery of PBC J 2333.

This PBS Space Time episode explores the history of discovering the universe beyond the Milky Way, focusing on Edwin Hubble’s 1924 proof that Andromeda is a separate galaxy.

PBS Space Time explores why the arrow of time exists despite fundamental physics laws being time-symmetric.

This episode explores the history of determining Earth's age, tracing the shift from religious estimates like Bishop Ussher's 4004 BC to scientific methods.

This episode explores the history and controversy behind Pluto’s reclassification, arguing that the term "planet" is scientifically vague and subject to revision.

PBS Space Time explores the profound difficulty of detecting individual gravitons to confirm gravity's quantum nature.

This episode explores how physicists use analog black holes, such as water vortices and Bose-Einstein condensates, to study phenomena that are impossible to observe in real black holes.

PBS Space Time explores whether antimatter experiences gravitational repulsion, a key question for potential anti-gravity technology.

This episode explores new DESI survey data suggesting dark energy may be weakening over time, challenging the standard constant model.

This episode explores axionic dark matter, a quantum mechanical wave that may hold galaxies together and explain the universe's invisible mass.

PBS Space Time examines Dr.

This episode explores the potential "Big Rip" scenario where dark energy increases over time, tearing apart galaxies, stars, and atoms.

This episode explores the informational interpretation of quantum mechanics, arguing that quantum weirdness like entanglement and uncertainty arises…

PBS Space Time explores the muon g-2 experiment at Fermilab, which measures the anomalous magnetic dipole moment of the muon to test the Standard Model.

PBS Space Time explores the feasibility of a generation ship mission to Proxima Centauri B, assuming a launch within 30 years.

PBS Space Time explores the fine-tuning of fundamental constants, arguing that slight variations in forces like the strong nuclear force or gravity would preclude stars, complex chemistry, and life.

PBS Space Time explores Freeman Dyson’s 2012 argument that detecting individual gravitons is fundamentally impossible due to black hole formation and quantum vacuum limits.

This episode explores the absolute limits of what we can see in the universe, distinguishing between the current particle horizon and the ultimate cosmological event horizon.

This episode explores how neutron star collisions, rather than supernovae, are the primary source of heavy elements like gold and uranium.

This episode explores the Drake Equation and the potential for life to arise independently twice on Earth, citing a 4.

This episode explores the holographic principle, explaining that the maximum information in a volume of space is proportional to its surface area…

This episode explores the tight correlation between supermassive black holes and their host galaxies, a long-standing astrophysical conundrum.

This episode explores the computational limits of quantum mechanics, explaining why simulating multi-particle systems is exponentially more difficult than classical physics.

This episode explores the mechanics and potential dangers of supernovae, focusing on Betelgeuse and the recent discovery that nearby explosions can…

PBS Space Time explores Roy Kerr’s recent paper challenging the inevitability of black hole singularities.

This episode explores electroweak unification, explaining how the electromagnetic and weak forces were once a single entity before symmetry breaking gave particles mass.