While LIFE is unique in its scope and ambition, other projects share some of the scientific goals or employ or develop technology that is synergistic with that
relevant to LIFE.
METIS (the mid-infrared ELT imager and spectrograph), a
first generation instrument for ESO's 39-m Extremely Large Telescope (ELT). METIS will work at mid-infrared wavelengths (3-19 micrometer)
and will be operational in the mid 2020s. Exoplanet science is one of the main drivers for METIS' development, and, while METIS might be (one of) the first instrument(s) to ever image a
terrestrial planet around one of the nearest stars, the total number of small planets that are within METIS' reach will be limited to a few.
Hi-5, a new
instrument study for ESO's Very Large Telescope Interferometer (VLTI). The main goal is to
develop the relevant technology to do high-contrast (nulling) interferometry between 3-5 micrometer wavelength from the ground to study forming exoplanets, but also exozodiacal dust disks and
IR-bright extragalactic sources with the highest possible angular resolution.
PFI (Planet Formation Imager), an international project developing a new instrument concept for a new
interferometer. The challenging goal is to deliver spatially resolved images of Hill-sphere-sized structures within the gas and dust rich disk surrounding young stars to study empirically the
physical conditions and mechanisms of gas-giant planet formation.
LUVOIR and HabEX are mission concepts from NASA with the goal to detect and characterize terrestrial exoplanets in reflected light. The
Origin Space Telescope (OST) concept, also under study at NASA, would provide
transmission and secondary eclipse measurements of small planets between 3 and 20 micron. Depending on the outcome of the decadal survey in 2020 one of the three might become
NASA's next flagship mission.