NASA’s Roman Telescope Tests a ‘Stealth Mode’ Coronagraph
NASA's Roman Space Telescope is testing a breakthrough coronagraph to block starlight and reveal distant worlds.
The update
NASA is preparing to launch the Nancy Grace Roman Space Telescope, which includes a specialized coronagraph. This instrument is designed to block the light of a star to reveal fainter objects, like planets, that would otherwise be lost in the glare. The technology uses adaptive optics to deform mirrors and cancel out light distortions, a technique currently used on advanced ground-based telescopes but being tested in space for the first time.
Why it matters
Successfully testing this coronagraph is a critical step toward discovering Earth-like planets orbiting sunlike stars. NASA compares the task to photographing a firefly next to a floodlight. Overcoming this challenge could pave the way for future space telescopes capable of directly imaging these distant worlds.
What to watch
Scientists will monitor the performance of the coronagraph once the telescope is in orbit. Success would validate the technology for future missions aimed at finding habitable planets. The launch is scheduled for Sunday at 7:26 a.m. ET from Kennedy Space Center, with NASA providing live coverage.