Rocks containing limonite, a hydrous iron oxide, may be identified readily from Landsat Multispectral Scanner data.
Landsat acquires digital data that are converted into an image.
More than a million images of Earth have been acquired by the Landsat satellites.
Landsat satellites carry sensors that record “light,” or portions of the electromagnetic spectrum, as it reflects off the Earth.
In 1972, the United States launched the first of a group of unmanned satellites collectively known as Landsat.
Studies using Landsat data help demonstrate the impact of people and animals on the Earth.
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.