SEEING THE NENANA RIVER VALLEY FROM SPACE - Landsat

NASA has an Landsat Education and Public Outreach program. This includes formal and informal education as well as resources and tutorials.

Landsat sensors record reflected and emitted energy from Earth in various wavelengths of the electromagnetic spectrum.

Landsats 5 and 7 "see" and record blue, green, and red light in the visible spectrum as well as near-infrared, mid-infrared, and thermal-infrared light that human eyes cannot perceive (although we can feel the thermal-infrared as heat).

Landsat data are acquired over the same area every 16 days.

This Landsat image (right) was acquired during the summer. It is a "real" color image.

Blue represents glaciers
Green represents leafy vegetation
Red-pink represents bare rock
Brown-redsrepresent shrubs
White represents clouds

Compare the features you see on this image with features on the topographic map of the region.

See a larger version of this image.