May 26, 2009
Planck will separate from the launcher about 30 minutes after launch, a couple of minutes after Herschel. The two spacecraft will independently head towards their respective orbits the second Lagrange point of the Sun-Earth system (L2), some 1.5 million km from Earth in the direction opposite to the Sun. It will take about 60 days for satellites to enter their operational orbits.
Topics: Environment, Space, Astronomy, Space exploration, Earth orbits, Herschel Space Observatory, Satellite, Lagrangian point, Celestial mechanics, Planck, European Space Agency, Spaceflight, Moon