1. APC - Université Paris Diderot - CNRS
Looking back in time
Cyrille Rosset
APC - Université Paris Diderot - CNRS

2. Launch of Planck - 14 May 2009

3. History of the Universe
Observer
NASA/WMAP Science Team

4. Observations Expansion of the Universe Velocity Hubble, 1929 Distance
km/s
1000
Velocity
500
Hubble, 1929
106 1
106
2 x106
2 x106 2
Mpc pc pc pc
Distance

5. Observations
Expansion of the Universe
Hubble Satellite
Freedman, 2001

6. Observations
Abundance of light elements (H, He)

7. Observations Cosmic Microwave Background Predicted in 1948
Observed in 1964 by Penzias and Wilson
(COBE/DMR homepage)

8. Dark matter

9. Gravitational lensing

11. Content of the Universe
Dark matter 25%
Hot gas 4%
Stars and planets 0.5%
Neutrinos 0,5%
Light 0,05%
Dark energy 70%

12. Planck 1.5 m off-axis Gregorian telescope 2 instruments: LFI (20K)
HFI (0.1K)
Angular resolution : 30’ to 5’
650 M€, 600 scientists, 29 laboratories, 14 countries (Europe, USA, Canada)

16. CMB and cosmology results in April 2013 !