![]() SPEChO may also be useful for the science case of galaxies. As long with a potential to recover the original scientific goals from EChO, SPEChO will enable SPICA to conduct specialized exoplanetary science studies. The proposed EChO instrument on SPICA (SPEChO) is a spectrometer covering light wavelengths from 5 to 20 micrometres, and will observe exoplanet atmospheres utilizing transit spectroscopy. ![]() It would have orbited around the L2 Lagrange point, 1.5 million km from Earth in the anti-sunward direction.įollowing PLATO's M3 selection, a proposal to add EChO on the joint Japanese-European SPICA far-infrared telescope emerged. It would have measured the atmospheric composition, temperature and albedo of a representative sample of known exoplanets, constrain models of their internal structure and improve understanding of how planets form and evolve. EChO was intended to provide high resolution, multi-wavelength spectroscopic observations. ![]() ĮChO would have been the first dedicated mission to investigate exoplanetary atmospheres, addressing the suitability of those planets for life and placing the Solar System in context. On 19 February 2014 the PLATO mission was selected in place of the other candidates in the programme, including EChO. The Exoplanet Characterisation Observatory ( EChO) was a proposed space telescope as part of the Cosmic Vision roadmap of the European Space Agency, and competed with four other missions for the M3 slot in the programme.
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