When the newest Landsat spacecraft trains its state-of-the-art sensors on Earth’s surface, it will provide images of our ever-changing planet in unparalleled clarity.

Above the Earth, Below the Surface: Landsat’s Role in Monitoring Water Quality
Safeguarding freshwater resources is crucial, and while scientists use a variety of ground-based techniques to gauge water quality, the Landsat program has provided water quality data from orbit for decades.