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Measuring the Universe With a 14-Billion Light-Year Ruler

Season 12 Episode 4 | 10m 40s

Since the time of the ancient Greeks, scientists have been constructing a cosmic measuring tape to measure the universe from our own backyard all the way to its ever-expanding edge: the cosmic distance ladder. In this video, we climb that ladder and explore how each rung has revealed something new and previously unthinkable about the universe we live in.

Aired: 04/09/24
Extras
Lucy investigates Queen Mary I - was she really as bloody as history suggests?
Eliza faces a conflict of interests when looking into the personal life of Commissioner Fitzroy.
Eliza explores the cut-throat world of Victorian theater.
A hunger strike against solitary confinement at Pelican Bay prison became a massive feat of unity.
Eliza’s life is turned upside down when she finds herself dragged into a missing persons case.
Great Migrations explores how a series of Black migrations have shaped America.
Few Jews had access to weapons in the Warsaw Ghetto, but they resisted nonetheless.
The Warsaw Ghetto Uprising was the first armed battle against the Germans.
Many groups of Jews escaped the ghettos to fight in the forests, denying these areas to Germans.
Kovner wrote a Manifesto, the first published call for Jews to fight back.
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