The Nancy Grace Roman Space Telescope: Dark Energy and Exoplanets

<!--HTML--><div>The top recommendation for a large space mission in the US 2010 Decadal Survey was the Nancy Grace Roman Space Telescope (formerly known as WFIRST), which is now on schedule for launch in 2025.&nbsp;&nbsp;Similarities in hardware requirements between proposed dark energy cosmology, exoplanet microlensing, and near infrared surveyor missions allowed for a single mission that would accomplish all three goals.&nbsp;&nbsp;The gift of an existing 2.4 meter telescope to NASA by another US government agency allowed for the addition of a coronagraph that will take images and spectra of nearby exoplanets; this instrument will be&nbsp;a technological stepping stone to imaging other Earths in the 2030s.&nbsp;&nbsp;I will give an overview of Roman's instrumentation, science goals, and implementation plan.</div> <div>&nbsp;</div>