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The HARPS search for southern extra-solar planets. XI. Super-Earths (5 and 8 M{⊕}) in a 3-planet system
This Letter reports on the detection of two super-Earth planets in the Gl 581 system, which is already known to harbour a hot Neptune. One of the planets has a mass of 5 M⊕ and resides at the “warm”Expand
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St Georges et le dragon (P. Uccello)
Voici le tableau que nous avons etudie en cours. Il se trouve a la National Gallery a Londres. N'hesitez pas a aller le voir