An evil twin arrives! The engineering model of the @BepiColombo spacecraft arrived at #ESOC this week. Mission control teams will use it to test & validate software on ground before uploading to the (real) spacecraft #Mercury https://t.co/hS9VLIuYsa Info https://t.co/saOaAQQhU2 pic.twitter.com/za9I5E6GxC

— ESA Operations (@esaoperations) March 7, 2018