(planned space mission for exoplanet spectrography)
FINESSE (for Fast Infrared Exoplanet SpectroscopySurvey Explorer)
was a planned space observatory to perform
infraredspectrographic
observations of 500 extra-solar planets.
It was a NASAMIDEX (Medium-class Explorer Program)
candidate proposal for a 2019 decision.
A 2023 launch date was targeted to be followed by a mission
of at least two years. It would reside at the
Earth-Sun L2 Lagrangian point.
In February 2019, NASA selected a competing proposal, SPHEREx.
The FINESSE plan was considered redundant, given the ESAARIEL plan.
NASA also uses the acronym FINESSE for an initiative called
Field Investigations to Enable Solar System Science and Exploration,
a research effort in support of future exploration
of the Moon, near-Earth objects, and the Mars moons, Phobos and Deimos.