NASA is gearing up to launch its next flagship space telescope – combining spy technology with sophisticated infrared detectors

NASA is set to launch its next flagship space telescope, the Nancy Grace Roman Space Telescope, which combines elements of spy technology with advanced infrared detectors. The telescope, originally developed by the National Reconnaissance Office, was later transferred to NASA in 2012 when it was no longer needed for its future missions. After spending over a decade being modified, NASA aims to launch the Roman Space Telescope into space as early as August 30, 2026.

The primary scientific goals of the Roman Space Telescope are to survey a billion galaxies and trace the evolution of the universe over time. It will study the three-dimensional distribution of dark matter, which produces unseen effects on objects in the universe similar to those of visible matter. Additionally, the telescope will observe exploding stars called supernovas, which allow astronomers to measure the expansion rate of the universe.

Dark matter and dark energy, which make up the majority of the energy in the universe, are also being studied, although their physical natures remain unknown.

Closer to home, the telescope will monitor small variations in light from stars near the center of the Milky Way galaxy to identify rogue planets drifting between the stars. It also features a coronagraph instrument that will test the technology for future missions aimed at detecting Earth-like planets around other stars. The Roman Space Telescope's wide field of view allows it to capture a much larger piece of the sky in one image compared to other telescopes like the Hubble Space Telescope.

This is due to the telescope's spy origins, which have given it unusually fast optics and a relatively short focal length for its mirror diameter. The telescope's mirror diameter is about the same as Hubble's, but it can capture an area around a hundred times larger per image. The focal plane of the telescope is made up of 18 wide-area near-infrared detectors, with each detector having about 16 megapixels, totaling approximately 300 megapixels in coverage.

These detectors represent a significant advancement in technology, culminating years of research and development.