Tags: Artificialsatellite, Satellite.
Landsat 7 launched on April 15 1999 is the seventh satellite of the Landsat program. Landsat 7’s primary goal is to refresh the global archive of satellite photos providing up-to-date and cloud-free images. The Landsat Program is managed and operated by the USGS and data from Landsat 7 is collected and distributed by the USGS. The NASA World Wind project allows 3D images from Landsat 7 and other sources to be freely navigated and viewed from any angle.
