Planck Surveyor

Launch Date 2008 Mission End 2009-2010 Launch Vehicle Ariane 5 Mission Phase Implementation ORBIT: Lissajous orbit about the second Lagrange point of the Earth-Sun system (L2)

OBJECTIVES: Mapping of Cosmic Microwave Background anisotropies with improved sensitivity and angular resolution Determination of Hubble constant Testing inflationary models of the early universe Measuring amplitude of structures in Cosmic Microwave Background