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  1. Gale in an exoplanet's atmosphere

    Source:

    • Sciences et techniques

    Publishing date:

    June 26, 2012

    Using the Hubble Space Telescope (NASA/ESA), the astronomers observed important changes in the upper atmosphere of a remote planet. Just after a strong eruption on its host star was observed in the X-rays range, the planet experienced a violent atmospheric escape. It was the first time such detailed observation of variations in the atmosphere of an extrasolar planet was performed; this result contributed to our knowledge of climatic variations and meteorological alterations in extreme conditions.

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  2. CoRoT: 2 années bien remplies

    Publishing date:

    January 13, 2009

    Grâce au télescope spatial du CNES, qui fête ses 2 années d’observation, 5 exoplanètes ont déjà été identifiées et les scientifiques en apprennent tous les jours davantage sur la structure interne des étoiles. Prochaine étape : la découverte d’une autre Terre?

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