PBS Space Time Season 2026 Episode 4
Overview:
We've known that the universe is expanding since 1929, and that its expansion is accelerating since 1998. The culprit behind the acceleration is unknown, so we live with a stand-in term "dark energy". Our modern cosmological model assumes that dark energy has a constant density--always the same amount of the outward-shoving stuff per volume. But there's recent evidence to the contrary--which may be why our primary efforts to measure the expansion rate of the universe disagree with each other.
Genre : Documentary, Talk
Actors : Matthew OâDowd
Release Date : 2026-02-19
Duration : 21 menit
Rating : â 0/10 (0 votes)
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Other Episodes (Season 2026)
1. The Universe Itself Might Be Hiding the Gravity Particle From Us
2. This Particle Solved Everything. We Just Found Out It Isn't Real
3. The Universe Tried to Hide the Gravity Particle. Physicists Found a Loophole.
4. The Universe Is Racing Apart. We May Finally Know Why.
5. Most of Reality Is Invisible. We May Finally Be About to Reveal It.
6. Something Disturbing Happens When You Solve Einstein's Equations This Way
7. Earthâs Core Should Be Impossible. A New State of Matter Explains It.
8. We Found Galaxies Too Old for the Universe
9. We Thought Black Holes Ended in Singularities. They Might End In a Frozen Big Bang.
10. Weâve Been Searching for Aliens the Wrong Way. Thatâs All About To Change. . .
11. We Thought Black Holes Created Event Horizons. It Might Be the Opposite
12. The Quantum Experiment That Breaks Time
13. The Universe Has Been Expanding Since the Big Bang. Just Not How We Thought.
14. We Thought All Black Holes Came From Stars. We May Have Been Wrong.
15. There's Something Massive Hiding Behind the Galaxy's Strangest Star
16. JWST May Have Discovered a New Cosmic Object: The Black Hole Star
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