NASA's Roman Space Telescope (Nancy Grace Roman) held its aim steady for 8 hours at a time, which NASA compares to keeping a laser on a dime about 150 miles away, ahead of its hunt for hidden exoplanets.
How Roman's coronagraph, which NASA/JPL calls the first active coronagraph to fly in space, will try to block starlight to image planets, what its first light on 22 September 2026 showed, and what it has not shown yet.
0:00 A laser on a dime
0:38 A telescope eight months early
1:42 Holding still for 8 hours
2:46 The glare problem
3:35 Mirrors that change shape
4:37 First light
5:25 What it may see
6:12 Roman's other way to find planets
7:34 What it has not shown yet
8:20 The question
What has happened (as of 4 October 2026): Roman launched on 30 August 2026; fine-guidance tests (15–21 Sep) held pointing to better than 1/100,000 of a degree, for 30 minutes with the Wide Field Instrument and 8 hours at a time with the Coronagraph Instrument; the coronagraph took a first-light focus image of a faint star in the Large Magellanic Cloud on 22 Sep. What has not: Roman has not imaged a planet or demonstrated starlight suppression in space. The 100-million-to-one contrast is a design goal, the dime is NASA's analogy, and the coronagraph is a technology demonstration.
Sources
- NASA Roman blog, "NASA Checks Roman Guidance System, Takes First Coronagraph Observation" (30 Sep 2026)
- NASA JPL: first coronagraph test image; The Roman Coronagraph Instrument (mission page)
- NASA Roman FAQ and launch release (30 Aug 2026)
- NASA technology feature on deformable mirrors (Roman coronagraph, 2,304 actuators each)
- NASA/IPAC: Roman Galactic Bulge Time-Domain Survey (Jan 2026)
Visuals: NASA Goddard Scientific Visualization Studio (animations, labelled); NASA/Joel Kowsky (launch photos); NASA/JPL-Caltech (coronagraph photos; 2024 ground lab "dark hole" test); dime image: United States Mint (public domain). Schematics are labelled on screen.
Narration is a synthetic voice. Independent production, not affiliated with or endorsed by NASA.
If Roman's coronagraph could show you one planet around a nearby star, which star would you point it at? Tell us in the comments.
