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In support of the Astrobiology Science Strategy, this whitepaper outlinessome key technology challenges pertaining to the remote search for life inexoplanetary systems. Finding evidence for life on rocky planets outside of oursolar system requires new technical capabilities for the key measurements ofspectral signatures of biosignature gases, and of planetary mass measurement.Spectra of Earth-like planets can be directly measured in reflected stellarlight in the visible band or near-infrared using a factor 1e-10 starlightsuppression with occulters, either internal (coronagraph) or external(starshade). Absorption and emission (reflected and thermal) spectra can beobtained in the mid-infrared of rocky planets transiting M-dwarfs viaspectroscopy of the transit and secondary eclipse, respectively. Mass can bemeasured from the star's reflex motion, the reflex motion of a star, via eitherprecision radial velocity methods or astrometry. Several technology gaps mustbe closed to provide astronomers the necessary capabilities to obtain these keymeasurements for small planets orbiting within the predicted temperate zonesaround nearby stars. These involved performance improvements, in some cases,1-2 orders of magnitude from state-of-the-art or involve performances neverdemonstrated. The technologies advancing to close these gaps have beenidentified through the NASA Exoplanet Exploration Program's annual TechnologySelection and Prioritization Process in collaboration with the larger exoplanetscience and technology community

Technology Needs for Detecting Life Beyond the Solar System: A White Paper in Support of the Astrobiology Science Strategy