One Explosion Measures the Universe

追加: 2026-06-03

[00:00:00]Every type IA supernova explodes with the same brightness, every single one, which means astronomers can use them as rulers across billions of light years.

[00:00:08]One observation, one dead star detonating, and you know exactly how far away it is. That's how we discovered the universe's expansion is accelerating.

[00:00:16]Not a theory, a measurement made possible because dying stars are impossibly consistent. [music]