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2. Google Earth - Wikipedia

   en.wikipedia.org/wiki/Google_Earth

   Google Earth is a computer program that renders a 3D representation of Earth based primarily on satellite imagery. The program maps the Earth by superimposing satellite images, aerial photography, and GIS data onto a 3D globe, allowing users to see cities and landscapes from various angles. Users can explore the globe by entering addresses and ...

3. List of satellite pass predictors - Wikipedia

   en.wikipedia.org/wiki/List_of_satellite_pass...

   ISS SpaceX Satellite Tracking – tracks all Earth orbiting satellites while providing detailed location information for the users location, plus pass prediction listing. TrackSat - Satellite tracker – can track satellites orbiting the Earth in real time and predict their passes over your specific geolocation. Includes satellites such as ...

4. Global Positioning System - Wikipedia

   en.wikipedia.org/wiki/Global_Positioning_System

   While most clocks derive their time from Coordinated Universal Time (UTC), the atomic clocks on the satellites are set to GPS time. The difference is that GPS time is not corrected to match the rotation of the Earth, so it does not contain new leap seconds or other corrections that are periodically added to UTC. GPS time was set to match UTC in ...

5. Satellite navigation - Wikipedia

   en.wikipedia.org/wiki/Satellite_navigation

   Satellite navigation is a system that uses satellites to provide geolocation and time information to a receiver on Earth. GNSS is a term that refers to the global navigation satellite systems that operate worldwide, such as GPS, GLONASS, Galileo and BeiDou. Learn more about the history, technology and applications of satellite navigation from this Wikipedia article.

6. Galileo (satellite navigation) - Wikipedia

   en.wikipedia.org/wiki/Galileo_(satellite_navigation)

   Galileo launch on a Soyuz rocket on 21 October 2011. The first two Galileo In-Orbit Validation satellites were launched by Soyuz ST-B flown from Centre Spatial Guyanais on 21 October 2011, [63] and the remaining two on 12 October 2012. [64] As of 2017, the satellites are fully useful for precise positioning and geodesy with a limited usability ...

7. List of Earth observation satellites - Wikipedia

   en.wikipedia.org/wiki/List_of_Earth_observation...

   NASA Earth science satellite fleet as of September 2020, planned through 2023. Earth observation satellite missions developed by the ESA as of 2019. Earth observation satellites are Earth-orbiting spacecraft with sensors used to collect imagery and measurements of the surface of the earth. These satellites are used to monitor short-term weather ...