ESA astronaut Tim Peake, NASA astronaut Tim Kopra and commander Yuri Malenchenko were launched into space 15 Decemeber 11:03 GMT from Baikonur cosmodrome, Kazakhstan.The launch marks the start of Tim Peake’s six-month Principia mission on the International Space Station running over 30 scientific experiments for ESA.Follow Tim Peake via timpeake.esa.int and follow the whole mission on ESA’s Principia blog.