Moscow - Russia successfully sent into orbit Tuesday one of the European Space Agency's (ESA) most advanced missions to date that aims to map the Earth's gravity field, the Russian Space Forces said.
Spokesman Lieutenant-Colonel Alexei Zolotukhin was quoted by Russian news agencies as saying the satellite took off on the back of modified Russian ballistic missile at 1421 GMT from the Plesetsk Cosmodrome in north-west Russia.
"Approximately 1.5 hours after its start, the satellite will already be on its second lap around the Earth," Zolotukhin told Interfax.