+Hubble's Law describes the observed proportional relationship between a [galaxy's](/wiki/galaxy) distance and its [recession velocity](/wiki/recession-velocity). This foundational insight, first observed by Edwin Hubble, provides key evidence for the universe's ongoing expansion.
+## See also
+- [Cosmology](/wiki/cosmology)
+- [Redshift](/wiki/redshift)
+- [Big Bang](/wiki/big-bang)
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