That depends on the satellite. Many use cameras of various types, such as radio imaging, infrared, or visible spectrum. Others are used to measure pressure waves traveling through space. They can be designed to measure just about anything.
They use
echolocation- example....bats have this to determine where they are.
TJ WAS HERE !!!!!!!!!!
It uses remote sensing or in other words sonar.
With cheese
Weather balloons and satellites
they use satellites and barometers and thermometers
Satellites collect and send raw data to ground stations for computers to process and use complex computer models to predict future weather patterns.
By doing deep earth tectonic plate scans to find changes in density and movement.
astronomers collect data by diverse technical equipment: - by space probes -by telescopes -by satellites -and by other technical equipment In general they often also use radiometry/radiation and take pictures of astronomic objects, sometimes they also land on some objects and take samples, sometimes also by meteorites (that strike on earth).
Landsat
Landsat
Landsat is a series of Earth observation satellites operated by NASA and the United States Geological Survey.
Mapping satellites.
The Landsat program is program is a system of satellites that take pictures of the surface of a planet.
John P. Stanley has written: 'LANDSAT-4 horizon scanner full orbit data averages' -- subject(s): Data processing, Error analysis, Horizon scanners, Landsat 4., Landsat satellites 'Farming by design' -- subject(s): Farm management
John R Everett has written: 'Contribution of Landsat-4 thematic mapper data to geologic exploration' -- subject(s): Landsat satellites, Remote sensing
The Landsat collects information about the surface and forms it into computer data for scientists to study.
William Donald Nixon has written: 'Landsat' -- subject(s): Landsat satellites
Quocheng Sung has written: 'Taiwan land use mapping by computer processing of landsat imagery' -- subject(s): Data processing, Land use, Land use mapping, Landsat satellites, Remote sensing
J. S. Schubert has written: 'Computer processing of LANDSAT data for Canada land inventory, land use mapping' -- subject(s): Land use mapping, Landsat satellites, Remote sensing
From balloons, satellites, ships, and weather stations.