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Une question de méthodeDes astronomes détectent une exoplanète qui réfléchit la lumière et voilà pourquoi c’est une nouvelle excitante
Si les observateurs terriens ont détecté au total près de 2 000 exoplanètes en quelques décennies, leur caractère éloigné rendait jusqu'à présent difficile toute analyse approfondie. L'instrument Harps, un spectrographe bien connu des astronomes, permet dorénavant d'en savoir plus sur la composition de leur atmosphère.
25 avril 2015