data satelit sentinel

http://www.esa.int/Our_Activities/Observing_the_Earth/Copernicus/Sentinel-2/Data_products
https://sentinel.esa.int/web/sentinel/home
http://www.bbc.com/news/science-environment-36313251?utm_content=buffer009f8&utm_medium=social&utm_source=facebook.com&utm_campaign=buffer