1. ESAs Cosmic Vision David Southwood Director of Science and Robotic Exploration European Space Agency Paris, France 16 January 2009 International Year of Astronomy Inauguration UNESCO, Paris, France

5. Deep space astronomical observatories

6. Que veulent dire les petits chuchotements qui restent du Big Bang? COBE WMAP Planck

7. The formation of stars

8. Gaia: a 3-D mapping of our galaxy

9. GAIA is going to detect and track : 10 9 (one billion) stars 10 6 – 10 7 resolved galaxies 500000 brown dwarfs 300000 extrasolar planets 200 gravitational lenses 10 7 resolved binaries 20 × 10 6 variable stars Tests of General Relativity and….. 10 5 – 10 6 solar system objects The numbers…..

10. The GAIA data challenge Over the nominal mission lifetime of five years, Gaias payload will yield a total uncompressed data volume of around 100 terabytes. The satellite will have contact with the ground station once a day for a mean duration of 11 hours, during which an uncompressed data volume of roughly 50 gigabytes will be down-linked at a rate of a few megabits per second.

11. JWST

13. LISA

15. Huygens landing site – habitable in 10 9 ans ?

16. [Schiaperelli 1877] MARS in 1954