Dark Fission Space Systems, INC.
18 Liberty St Sw Unit 200, Leesburg, VA 20175
Operating signal within 12 months from two or more independent sources.
What they make
Guided Missile and Space Vehicle Propulsion Unit and Propulsion Unit Parts Manufacturing336415- DARKFORCE
- nuclear thermal propulsion
- Cislunar Logistics
- Rapid Solar System Access
- nuclear thermal rocket engine
- radial-inflow particle bed reactor
- Space nuclear launch approval
- specific impulse
- cislunar transport
NAMED ON THE COMPANY’S OWN WEBSITE, READ JUL 29, 2026
Where it is
Other plants nearby
| Facility | City | Industry | Status | Distance |
|---|---|---|---|---|
| Amphibian Aerospace Industries Defense, INC | Leesburg | Aircraft Manufacturing 336411 | ACTIVE | 0.4 KM |
| Electronic Instrumentation & Technology LLC | Leesburg | Printed Circuit Assembly (Electronic Assembly) Manufacturing 334418 | ACTIVE | 3.1 KM |
| Flying Ship Technologies CORP | Leesburg | Boat Building 336612 | ACTIVE | 3.9 KM |
| Genesis Unmanned LLC | Leesburg | Aircraft Manufacturing 336411 | ACTIVE | 5.3 KM |
| Periscope Aviation LLC | Leesburg | Aircraft Manufacturing 336411 | LIKELY ACTIVE | 4.6 KM |
Also at this address
No other federal record shares this street address.
Where this record comes from
2 sources hold this plant, and 8 fields on this page come from them. Each line is one agency’s own record of it: the identifier it is filed under, whether that record shows the plant operating or only that it exists, and when the register first and last saw it there.
- The company’s own websiteOPERATINGfirst seen JUL 2026 · last seen OCT 2026
- SAM.gov entity registrationOPERATINGRecord ZD7VAGK9UBE7 · first seen MAY 2026 · last seen MAY 2026
IN LOUDOUN COUNTY24 other plants share this one’s industry (Aerospace Product and Parts Manufacturing, NAICS 3364); 1 of them has a size band on record.
What each source says
Every field below, as each source filed it. The value this page shows is marked; where the sources disagree, the field says so. Status is computed from independent sources; nothing here is self-reported unless marked Claimed.
- Name
- SAM.gov: DARK FISSION SPACE SYSTEMS, INC. · MAY 2026
- Street address
- SAM.gov: 18 LIBERTY ST SW UNIT 200 · MAY 2026
- City
- SAM.gov: LEESBURG · MAY 2026
- State
- SAM.gov: VA · MAY 2026
- Coordinates
- Census geocoder: 39.115472770319,-77.567153316841 · JUL 2026
- Website
- SAM.gov: darkfission.space · MAY 2026
- CAGE code
- SAM.gov: 9B7W0 · MAY 2026
- SAM registration expires
- SAM.gov: 2027-05-08 · MAY 2026