The orbit of ESA’s retired ERS-2 observation satellite is being lowered to reduce the risk of collision with other satellites or space debris. The goal is to leave it well below most operating polar satellites by the end of August. The first in a series of thruster firings, each lasting about 300 seconds, was commanded by the mission control team at ESA’s European Space Operations Centre in Germany on 6 July to lower the orbit of the Agency’s veteran satellite.The burns have since lowered the satellite from its initial 785 km-high orbit to about 700 km. Read More