... 2003 July 20: An IonDrive for Deep Space 1 . 2003 July 19: NGC 3621: Far Beyond the Local Group . ... October 26 1998: An IonDrive for Deep Space 1 . October 25 1998: The Pleiades Star Cluster . ...
... Having left Vesta in September, Dawn's ion engine is now steadily driving it to match orbits with Ceres, scheduled to arrive there in February 2015. ...
... Having left Vesta in September of 2012, Dawn's ion engine has been steadily driving it to match orbits with Ceres, scheduled to arrive there in February 2015. ...