Planck
AgencyESA
Year2009-2013
TypeCosmology
RocketAriane 5
CountryEurope
About the Mission
Mapped the afterglow of the Big Bang with record precision. Fixed the age of the universe at 13.8 billion years. Measured the cosmos as 27 percent matter and 68 percent dark energy. Its all sky maps sharpened the standard model of cosmology. Operated from the L2 point, later home to Webb.
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