"The Herschel and Planck satellites, built by Thales Alenia Space as prime contractor for the European Space Agency, have arrived at the Guiana Space Center in Kourou, French Guiana, for final preparations leading up to an Ariane 5 launch on April 16. These two space observatories, the most complex ever built in Europe, will be placed in orbit at a stable point 1.5 million kilometers from Earth, to...