Remarks
The ESA Earth Observation Users' Single Sign On will manage a unique user name and password for many activities. Before registering to individual services you have to register in the single sign on. If you have already registered in the single sign on (and weren't already logged in somewhere) then don't register again, just click “I'm already registered” and enter your user name/password.
Discover and download the Earth observation data you need from the broad catalogue of missions the European Space Agency operate and support https://earth.esa.int/eogateway/search?skipDetection=true&text=&category=Data