Launched in December, #Cheops is undergoing in-orbit commissioning. Once ready, it will observe bright stars known to host #exoplanets as the planets transit across the star's disc. From the dip in brightness, it will measure very precisely the sizes of these exoplanets 


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& 10 ESA Member States
taken 14 Jan with the Telesto 60cm telescope near Geneva observatory, Cheops is seen transiting the bright star eta Aurigae
UNIGE/Telesto/G.Deprez, M.Marmier, S.Fraud, N.Billot