A UNIVERSE IN YOUR BACKYARD
To arrive at the edge of the world's knowledge, seek out the most complex and sophisticated minds, put them in a room together, and have them ask each other the questions they are asking themselves.
[Alan Guth:] Cosmology has very much become an observational science; it's no longer people sitting back in armchairs inventing unfounded theories about what the universe might look like. Observations are being made all the time: observations of the distribution of galaxies in the universe, observations of the microwave background radiation and the nonuniformities in that radiation; estimates of the mass density of the universe; estimates of the age of the universe, based on a variety of different techniques. All that has an impact on the kinds of theories of the universe which are viable. In
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