International sites
Further information on the EU and ESA’s Copernicus programme and the utilization of satellite observations in environmental monitoring can be found on the Copernicus program site, including an illustrative animation.
The Stuff in Space site allows you to keep track of where the various satellites are currently traveling and how their orbits have been determined.
Videos and footage from satellites: https://www.esa.int/esearch?q=Sentinel+2+satellite