The Laws of Thermodynamics
Four rules that nothing escapes, told as one story about energy, statistics and time.
foundations
Synthesis: What We Know About Spacetime
What We Know About Spacetime: A Synthesis
Series: Spacetime Physics | Part: 9 of 9 Primary Tag: FRONTIER SCIENCE Keywords: spacetime, physics synthesis, relativity, cosmology, future directions
Over eight articles, we've explored the physics of space and time—from Einstein's foundational revolutions through black holes and wormholes
Quantum Gravity: The Unfinished Revolution
Quantum Gravity: The Unfinished Revolution
Series: Spacetime Physics | Part: 8 of 9 Primary Tag: FRONTIER SCIENCE Keywords: quantum gravity, string theory, loop quantum gravity, Planck scale, unification
Physics has two great theories of the 20th century: general relativity and quantum mechanics.
General relativity describes gravity as the curvature of spacetime.
The Multiverse: Many Worlds or Many Nonsense?
The Multiverse: Many Worlds or Many Nonsense?
Series: Spacetime Physics | Part: 7 of 9 Primary Tag: FRONTIER SCIENCE Keywords: multiverse, many-worlds interpretation, string theory landscape, testability, scientific methodology
Is our universe the only one?
The idea of a multiverse—a collection of universes beyond our own—has gone from
The Alcubierre Drive: Warp Speed Without Breaking Laws
The Alcubierre Drive: Warp Speed Without Breaking Laws
Series: Spacetime Physics | Part: 6 of 9 Primary Tag: FRONTIER SCIENCE Keywords: Alcubierre drive, warp drive, faster-than-light, exotic matter, spacetime manipulation
Nothing can travel faster than light. This is usually stated as a fundamental limit, derived from special relativity.
But
Time Travel: What Physics Actually Allows
Time Travel: What Physics Actually Allows
Series: Spacetime Physics | Part: 5 of 9 Primary Tag: FRONTIER SCIENCE Keywords: time travel, closed timelike curves, Gödel universe, grandfather paradox, chronology protection
Time travel is a staple of science fiction. It's also a legitimate topic in theoretical physics.
General relativity doesn&
Wormholes: Tunnels Through Spacetime
Wormholes: Tunnels Through Spacetime
Series: Spacetime Physics | Part: 4 of 9 Primary Tag: FRONTIER SCIENCE Keywords: wormholes, Einstein-Rosen bridge, traversable wormholes, exotic matter, spacetime topology
In 1935, Einstein and Nathan Rosen published a paper exploring a peculiar feature of Schwarzschild's black hole solution.
The math seemed to