Download original image
Illustration of Earth-spacecraft communication and instrument activity. The deep space network at Earth consists of six antennas of which two (E-Station i and E-Station i+3) are operating simultaneously as displayed in the figure. Each Earth station is intermittently in contact with only three spacecraft, all spacecraft perform in-situ measurements whereas only two spacecraft also perform remote measurements (i.e. in-situ + imager), depending on their location.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.