On May 22, 2018, NASA’s GRACE Follow-On mission was successfully launched from Vandenberg Air Force Base, California, on board a SpaceX Falcon 9 rocket. At 11 minutes 47 seconds after liftoff, the two GRACE Follow-On satellites separated from the rocket, shortly after which ground controllers acquired signals from both.
For updates and other information, go to:
https://gracefo.jpl.nasa.gov/news/