The application receives regular updates with modules featuring timely events such as the end of the Cassini mission , and arrival of spacecraft such as MAVEN to Mars and the Solar eclipse of August 21 , 2017 . The application received heavy use during the entry , descent and landing of the Mars Science Laboratory . The landing of MSL brought an additional 739,000 visits and 20 terabytes of data was streamed from JPL servers that weekend in support of the software . Touchdown time of the rover in the software was predicted by team planning spacecraft trajectory weeks ahead but was accurate within a fraction of a second
Solar eclipse of August 21 , 2017
Solar eclipse of August 21, 2017
NASA's Eyes