Precision Cosmology Takes Flight

Science  22 Jun 2001:
Vol. 292, Issue 5525, pp. 2234-2236
DOI: 10.1126/science.292.5525.2234

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The Microwave Anisotropy Probe, a $95 million satellite scheduled for launch on 30 June, heralds a new era of sensing the remnant heat from the big bang. Its measurements should confirm--or refute--cosmologists' dearest models of the first incandescent moments of the universe. In this special focus on the cosmic microwave background, Science looks at current and upcoming experiments; a second story (p. 2236a) describes how theorists read the history and fate of the universe in the reverberations of the explosion that created it.