Anniversary video: 15 years ago, the NASA GRACE satellites were launched.

On board each two satellites, an accelerometer developped by ONERA has given for 15 years valuable data to monitor the Earth's gravity field. The MICROSCOPE and GOCE ONERA's acceleromters have a 100 better performance.They are inherited from GRACE acccelerometer technology. NASA JPL realised a video for the anniversary: https://youtu.be/fKVPFyu_tHQ 

On board each two satellites, an accelerometer developped by ONERA has given for 15 years valuable data to monitor the Earth's gravity field.