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The Sky

Roman has fuel for 22 years. NASA budgeted ten.

First burn: 40 pounds, not 441. Extra load at launch. L2 in December. Dunn: exquisite planning.

The Rocket News · Science and Tech · Greenbelt, Md.September 19, 2026 · 4 min read

A studio view of NASA’s Nancy Grace Roman Space Telescope, gold bay and solar arrays, in color. No figures in the frame.
A studio view of NASA’s Nancy Grace Roman Space Telescope, gold bay and solar arrays, in color. No figures in the frame.

NASA says the Nancy Grace Roman Space Telescope now has propellant for at least 22 years of science — more than double the 10-year fuel budget. Jamie Dunn, Goddard: exquisite planning, a precise SpaceX launch, a first mid-course correction that used about 40 pounds of hydrazine against 441 budgeted. The Science desk files a spacecraft still en route to L2, not a picture from the sky yet.

Launch was Aug. 30 on a Falcon Heavy. The observatory flew light; tanks were filled to the cap. Extra fuel at the pad: about four years. The accurate first burn: about four more. The second correction and insertion should add another four if they stay as quiet. Arrival: early December. Designed to be refueled in space. Not required yet.

Roman has fuel for at least 22 years of potential science operations.

The Science desk files Saturday as it is: 22 years in the tanks, a 10-year plan on paper, and a telescope that has not opened its eye.

Wire and further reading: science.nasa.gov

Filed under Science

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