EPSC2013: Get Ready For Rosetta’s Wake-Up Call With Activity Schedule For Target Comet
After a journey of almost ten years, the Rosetta mission has just a few months left to wait before beginning its rendezvous with a time capsule. Comet 67P/Churymov-Gerasimenko is a dirty snowball of ice and dust that preserves material from the formation of the Solar System 4.5 billion years ago. During 2014, the European Space Agency’s most ambitious mission to date will both start to orbit the comet’s nucleus and deploy a small laboratory of scientific instruments, Philae, to dock with the comet’s surface. To aid Rosetta in safely achieving its task, an international group of scientists back on Earth are using ground-based telescopes and computer models to understand the behaviour of the comet as it approaches the Sun and begins to form its tail. Their findings have been presented this week at the European Planetary Science Congress (EPSC) 2013 at University College London.
“For two or three orbits now, our community has been observing the comet to determine the shape of the nucleus, the angle at which it spins on its axis and how its activity varies as it orbits the Sun. All of this information is vital for the planning of Rosetta’s orbit and Philae’s delivery,” said Jessica Agarwal of the Max Planck Institute for Solar System Research (MPS).
“At this meeting, we have discussed everything from the make-up of the surface layer of the nucleus to the dust production rates, size and velocity of the particles emitted, the way the comet interacts with the solar magnetic environment… There are a lot of things we need to know!” added Matt Taylor, ESA’s Project Scientist for the Rosetta Mission.