Gravity bending starlight! (1919)
A solar eclipse confirms
that Einstein's theory of gravity, not Newton's, correctly predicts the
bending of starlight.
Our expanding universe! (1929)
Hubble builds on his earlier
discovery that the Milky Way Galaxy is but one of many galaxies in our
Universe to find that the Universe is expanding.
Einstein's death! (1955)
The debate rages between whether the
Big Bang and Steady State correctly describes the origin of the
Light from the Big Bang! (1965)
Penzias and Wilson discover
the Cosmic Microwave Background, the remnant radiation from the very
early Universe, which makes the Big Bang the lead theory for the origin
of the Universe.
The universe's baby picture! (1993)
The COBE mission measures
fluctuations in the Cosmic Microwave Background, which explain where
structure in our Universe comes from and confirming the role of
inflation in the early universe.
Dark energy! (2006)
The supernova distance scale leads to the
discovery of dark energy, a puzzling new component of our Universe that
had been undetected until 1997, and its the nature remains a mystery in
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