With these conditions, the HD189733b exoplanet's atmosphere is truly turbulent."These results open up perspectives to approach the study of exoplanet atmospheres," said researchers from the Planets National Centre of Competence in Research (NCCR) and universities of Geneva (UNIGE) and Bern, Switzerland.

For this, they measured the temperature of the atmosphere of an exoplanet by crossing two approaches.The first approach is based on the HARPS spectrometer and the second consists of a new way of interpreting sodium lines.

The HARPS spectrometer, an instrument designed at the UNIGE Observatory, is installed on a telescope of the European Star Observatory (ESO)in Chile."These findings consequently open up the path of exploring exoplanet atmospheres with tools that are more accessible than giant or space telescopes," the researchers noted.The papers were published in two journals -- Astronomy & Astrophysics and Astrophysical Journal Letters.

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