"Landsat." YourDictionary, n.d. Web. 14 January 2019. <https://www.yourdictionary.com/landsat>.
Landsat. (n.d.). Retrieved January 14th, 2019, from https://www.yourdictionary.com/landsat
Any of various satellites used to gather data for images of the Earth's land surface and coastal regions. These satellites are equipped with sensors that respond to Earth-reflected sunlight and infrared radiation. The first Landsat satellite was launched in 1972. Currently, the seventh satellite (Landsat 7) is orbiting Earth.