RT @BBCStargazing: “In a few hours @ESA_Rosetta will fire its engines for the last time.” Prof @chrislintott reports from mission cont… twitter.com/i/web/status/7…
RT @BBCStargazing: “In a few hours @ESA_Rosetta will fire its engines for the last time.” Prof @chrislintott reports from mission cont… twitter.com/i/web/status/7…