ScienceDaily: "Science's Breakthrough Of The Year: Illumination Of The Dark, Expanding Universe
In 2003, new evidence cemented the bizarre idea that the universe is made mostly of mysterious 'dark matter,' being stretched apart by an unknown force called 'dark energy.' This set of discoveries claims top honors as the Breakthrough of the Year....
...doubts were dispelled in 2003 [with]the most detailed picture ever of the cosmic microwave background -- the light emitted by the universe during the first instant of its existence. By analyzing patterns in this light, researchers concluded that the universe is only 4 percent ordinary matter. Twenty-three percent is dark matter, which astrophysicists believe is made up of a currently unknown particle. The remainder, 73 percent, is dark energy.
... also nailed down other basic properties of the universe, including its age (13.7 billion years old), expansion rate and density.
In 2003, new evidence cemented the bizarre idea that the universe is made mostly of mysterious 'dark matter,' being stretched apart by an unknown force called 'dark energy.' This set of discoveries claims top honors as the Breakthrough of the Year....
...doubts were dispelled in 2003 [with]the most detailed picture ever of the cosmic microwave background -- the light emitted by the universe during the first instant of its existence. By analyzing patterns in this light, researchers concluded that the universe is only 4 percent ordinary matter. Twenty-three percent is dark matter, which astrophysicists believe is made up of a currently unknown particle. The remainder, 73 percent, is dark energy.
... also nailed down other basic properties of the universe, including its age (13.7 billion years old), expansion rate and density.
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