Formerly known as WFIRST, the Wide Field Infrared Survey Telescope, the Roman Space Telescope is a NASA observatory designed to perform wide field imaging and surveys of the near infrared (NIR) sky. Credit: NASA Discrepancies in the Hubble constant, which describes how fast the universe is expanding, have vexed astronomers […]

High-resolution illustration of the Roman spacecraft against a starry background. Credit: NASA NASA’s Nancy Grace Roman Space Telescope will be able to explore even more cosmic questions, thanks to a new near-infrared filter. The upgrade will allow the observatory to see longer wavelengths of light, opening up exciting new opportunities […]

High-resolution illustration of the Roman spacecraft against a starry background. Credit: NASA’s Goddard Space Flight Center When it launches in the mid-2020s, NASA’s Nancy Grace Roman Space Telescope will explore an expansive range of infrared astrophysics topics. One eagerly anticipated survey will use a gravitational effect called microlensing to reveal thousands […]

This composite image illustrates the possibility of a Roman Space Telescope “ultra deep field” observation. In a deep field, astronomers collect light from a patch of sky for an extended period of time to reveal the faintest and most distant objects. This view centers on the Hubble Ultra Deep Field […]