The Biggest Number Fight in Cosmology: How Fast Is Space Expanding?
Автор: Space Mysteries
Загружено: 2026-01-31
Просмотров: 3
Описание:
Space is expanding — but here’s the problem: we can’t agree on how fast.
One of the most important numbers in cosmology — the Hubble constant (H₀) — is measured in two different ways… and the results don’t match.
The early-universe method (CMB / Big Bang afterglow) points to ~67
The late-universe method (distance ladder / supernovae) points to ~73
That small gap might sound harmless… but it can change the age, size, and history of the universe — and it may hint at new physics.
In this video, we break the “Hubble tension” down like a real investigation:
✅ What the Hubble constant actually measures
✅ Why the early universe and late universe disagree
✅ What could be wrong (systematics, calibration, dust, crowding)
✅ What could be missing (early dark energy, extra particles, new physics)
✅ Which future measurements might finally settle the fight (BAO, lensing, standard sirens)
If you’ve ever wondered whether the universe is hiding something in the last few percent… this is the case.
👇 Comment below:
Do you think the answer will land closer to 67 or 73 — and why?
👍 If you enjoyed this: like, subscribe, and turn on notifications for the next episode in this series.
#cosmology #hubbletension #astronomy #darkenergy #universe
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