{ "id": 14890, "url": "https://svs.gsfc.nasa.gov/14890/", "page_type": "Produced Video", "title": "Roman Deployment Test", "description": "Technicians recently tested two major deployments for NASA’s Nancy Grace Roman Space Telescope: the Deployable Aperture Cover (DAC) and the Solar Array Sun Shield (SASS). The DAC will protect Roman’s instruments before launch, then swing open once the telescope is in space. To simulate weightlessness, engineers used a gravity offload system precisely counterbalanced to reduce drag during deployment. The SASS unfurled in true flight-like fashion, with its solar panels swinging into place under powerful spring tension. Each release was marked by the sharp pop of a non-explosive actuator. Both deployments were successful, bringing Roman one step closer to its mission to study dark energy, exoplanets, and the distant universe. To learn more, check out the link in our Roman highlight.Credit: NASA's Goddard Space Flight Center Sophia Roberts: Videographer / ProducerScott Weissinger: Videographer / ProducerPaul Morris: EditorMusic Credit:“History in Motion” by Fred Dubois [SACEM], Koka Media [SACEM], Universal Publishing Production Music France [SACEM], and Universal Production Music. || ", "release_date": "2025-08-26T11:05:00-04:00", "update_date": "2025-09-10T15:50:23.867955-04:00", "main_image": { "id": 1157985, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a014800/a014890/ROMAN_TEST_DEPLOYMENT_WIDE_THUMB.jpg", "filename": "ROMAN_TEST_DEPLOYMENT_WIDE_THUMB.jpg", "media_type": "Image", "alt_text": "Master VersionHorizontal version. This is for use on any YouTube or non-YouTube platform where you want to display the video horizontally.", "width": 1920, "height": 1080, "pixels": 2073600 }, "main_video": null, "main_credits": {}, "progress": "Complete", "media_groups": [ { "id": 378793, "url": "https://svs.gsfc.nasa.gov/14890/#media_group_378793", "widget": "Basic text with HTML", "title": "", "caption": "", "description": "Technicians recently tested two major deployments for NASA’s Nancy Grace Roman Space Telescope: the Deployable Aperture Cover (DAC) and the Solar Array Sun Shield (SASS).

The DAC will protect Roman’s instruments before launch, then swing open once the telescope is in space. To simulate weightlessness, engineers used a gravity offload system precisely counterbalanced to reduce drag during deployment.

The SASS unfurled in true flight-like fashion, with its solar panels swinging into place under powerful spring tension. Each release was marked by the sharp pop of a non-explosive actuator.

Both deployments were successful, bringing Roman one step closer to its mission to study dark energy, exoplanets, and the distant universe. To learn more, check out the link in our Roman highlight.

Credit: NASA's Goddard Space Flight Center
Sophia Roberts: Videographer / Producer
Scott Weissinger: Videographer / Producer
Paul Morris: Editor

Music Credit:
“History in Motion” by Fred Dubois [SACEM], Koka Media [SACEM], Universal Publishing Production Music France [SACEM], and Universal Production Music.
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