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
Copernicus Data Space Ecosystem brings together satellite data distribution and processing services for professionals. CDSE also provides the Copernicus Browser — a web application for viewing satellite imagery.