Edwin Hubble

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Edwin Hubble
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Distance vs. velocity (away from us)for a bunch
of galaxies
Velocity (kilometers per second)
Distance (megaparsecs)
NASA StarChild http//starchild.gsfc.nasa.gov/docs
/StarChild/questions/redshift.html
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Hubbles Law
Velocity (kilometers per second)
Distance (megaparsecs)
NASA StarChild http//starchild.gsfc.nasa.gov/docs
/StarChild/questions/redshift.html
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Hubbles Law (modern data)
Freedman et al. (2001), The Astrophysical Journal
553, 47
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Type Ia Supernovae (Knop et al. 2003)
How faint each object appears (when viewed from
Earth)
Redshift (amount universe stretched since the
objects light was emitted)
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Type Ia Supernovae (Riess et al. 2004)
How faint each object appears (when viewed from
Earth)
Redshift (amount universe stretched since the
objects light was emitted)
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The Cosmic Microwave Background
NASA/WMAP Science Team
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The Cosmic Microwave Background
NASA/WMAP Science Team
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The Cosmic Microwave Background
NASA/WMAP Science Team