Just HOW big is MTG-S1? EUMETSAT 0 53 02.24 20:16 https://www.youtube.com/watch?v=o3_nqnjOnmw + 0 https://www.youtube.com/feeds/videos.xml?channel_id=UCiN59j5b1fAGnXVzI… + 1 Just HOW big is MTG-S1?