Credit/Courtesy: Reto Stockli, NASA Earth Observatory
When did Terra launch?
December 18, 1999
Where is Terra?
438 miles (705 kilometers) above Earth’s surface
What does Terra do?
The Terra satellite has five instruments that work together to observe Earth. Terra keeps a close watch on Earth's atmosphere, ocean, land, snow, and ice. Terra's instruments provide information about Earth’s water, carbon, and energy cycles, and also provides important information about natural disasters.