Three Steps to the Hubble Constant Earth Cepheids within the Large Magellanic Cloud Galaxies hosting Cepheids and Type Ia supernovas Light red-shifted (stretched by expansion of space) Distant galaxies in the expanding universe hosting Type Ia supernovas 180,000 24 – 100 million 100 million – 1 billion LIGHT-YEARS
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Three Steps to the Hubble Constant
Earth
Cepheidswithin the
Large Magellanic
Cloud
Galaxieshosting
Cepheidsand Type Iasupernovas
Light red-shifted (stretched by expansion of space)
Distant galaxiesin the expandinguniverse hosting
Type Ia supernovas
180,000 24 –100 million 100 million–1 billion
LIGHT-YEARS
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