
The coronagraph technology demonstration instrument will pioneer new capabilities that will be the basis for future instruments capable of directly detecting and characterizing Earth-like planets around nearby stars. With a wavelength range of 0.48-2.3 μm, the Roman Wide Field Imager has the largest etendue of any existing or planned optical/infrared space observatory. At high redshift, it can provide information on the topology of reionization and the abundance of sources like active galactic nuclei and pair-instability supernovae. Locally, it will likely enhance understanding of the structure and substructure of the Milky Way and nearby galaxies, including a census of the predicted but elusive ultra-faint dwarf galaxies.

The Roman Space Telescope will measurably advance knowledge of dark energy and exoplanet demographics.


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