Launched on Dec. 18, 1999, Terra's five onboard instruments began science operations in February 2000.
Launched on Dec. 18, 1999, Terra’s five onboard instruments began science operations in February 2000. Terra’s goal is to assess the health of the planet by providing comprehensive information about Earth’s land, oceans and atmosphere. From its vantage point 438 miles above our world, Terra orbits Earth more than 14 times a day and observes nearly the entire globe. > Read More