While @ESA_EO's #Cryosat mission is busy collecting vital measurements of #SeaIce thickness during the #Arctic winter, UK students have been keeping fit with @CPOM_news, @spacegovuk & @TriTrust on their quest to cycle 700 km to the #EarthObservation #satellite! pic.twitter.com/yeTvTlG9mq

— Tim Peake (@astro_timpeake) March 15, 2018