WHAT DOES TIERRAFIRMEPROJECT MEAN?

The sturdiness in the spacecraft and its instruments turned what was slated to generally be a six-year mission into a in excess of 20-yr voyage of discovery.When we?�ve achieved our mission and MLT prerequisite we intend to decreased our orbit so we could possibly get outside of the way of one other 705 km missions [like Aqua and Aura],??he claim