What is Landsat and when did it begin?
The Landsat Program is a series of Earth-observing satellite missions jointly managed by NASA and the U.S. Geological Survey.
In 1972, the launch of ERTS-1 (Earth Resources Technology Satellite, later renamed Landsat 1) started the era of a series of satellites that have since continuously acquired space-based land remote sensing data.
The latest satellite in the Landsat series, the Landsat Data Continuity Mission (LDCM), was launched on February 11, 2013. Now renamed Landsat 8, the data acquired by the satellite continues to expand the archive for users worldwide.
Details about all Landsat missions can be found on the Landsat Missions Timeline Webpage.