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2021-03-16: The NEW Crisis in Cosmology

  • 02:07: ... on a long chain of distance measurements that we call the cosmic distance ladder. First you measure   distances to objects in the solar ...
  • 03:55: ... that the  supernova method is a pretty high rung on   the cosmic distance ladder - which means if any rung below it is broken, the method ...
  • 10:40: ... in these flickering lenses, we can   get a measurement of cosmic distances, and with that a measurement of the expansion rate ...
  • 11:57: ... and so can be used to measure the expansion rate without the cosmic distance ladder.   We’re calling these black hole  mergers ...
  • 12:25: ... of the universe - whether it’s a crack in the rung of the cosmic distance ladder or   something more fundamental about how the ...

2019-01-24: The Crisis in Cosmology

  • 04:01: This stepwise determination of astronomical distances is called the cosmic distance ladder.
  • 05:38: By improving this run on the cosmic distance ladder,...

2016-05-04: Will Starshot's Insterstellar Journey Succeed?

  • 11:54: It's called the cosmic distance ladder.
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