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Antares

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All verified mentions of this organization in source documents.

During the summer, Antares and NASA conducted an electrically heated demonstration of the reactor system at Marshall Space Flight Center in Huntsville, Alabama.

Mentioned as: AntaresTechnical ProductDec 12, 2025Antares lines up $96 million to advance microreactor rollout

Antares currently employs about 60 staff.

Mentioned as: AntaresNarrative GeneralDec 12, 2025Antares lines up $96 million to advance microreactor rollout

Antares plans to conduct a first-of-a-kind electricity-producing demonstration unit in 2027.

Mentioned as: AntaresNarrative PlanDec 12, 2025Antares lines up $96 million to advance microreactor rollout

In April, DIU selected Antares under the Advanced Nuclear Power for Installations program to supply nuclear power to Department of War installations.

Mentioned as: AntaresOrg RelationshipDec 12, 2025Antares lines up $96 million to advance microreactor rollout

Antares is developing a 145,000-square-foot manufacturing complex in Torrance, California, designed to produce up to 10 microreactor units a year.

Mentioned as: AntaresOrg RelationshipDec 12, 2025Antares lines up $96 million to advance microreactor rollout

Antares operates across Torrance, California; Idaho Falls, Idaho; and Aiken, South Carolina.

Mentioned as: AntaresNarrative GeneralDec 12, 2025Antares lines up $96 million to advance microreactor rollout

Antares closed a $96 million Series B funding round.

Mentioned as: AntaresNarrative FinancialDec 9, 2025Series B Funding Will Accelerate Nuclear Microreactor Development

Shine Capital led the Series B funding round for Antares.

Mentioned as: AntaresNarrative GeneralDec 9, 2025Series B Funding Will Accelerate Nuclear Microreactor Development

Since the retirement of Antares, SEOPS has operated exclusively on SpaceX rideshare missions.

Mentioned as: AntaresNarrative GeneralNov 18, 2025US-Based Launch Aggregator Purchases Dedicated Isar Aerospace Flight

SEOPS has previously flown payloads aboard Northrop Grumman’s Antares rockets.

Mentioned as: AntaresNarrative GeneralNov 18, 2025US-Based Launch Aggregator Purchases Dedicated Isar Aerospace Flight

Launch Pad-0A at MARS will be configured to launch Alpha as early as 2025 in addition to supporting Antares 330 and the Medium Launch Vehicle (MLV).

Mentioned as: AntaresOrg RelationshipJun 24, 2024Firefly Aerospace Adds Alpha Launch Capability on Wallops Island, Virginia

Firefly Aerospace installed state-of-the-art machinery at Briggs to support production of Northrop Grumman’s Antares 330 and the Medium Launch Vehicle that Firefly and Northrop Grumman are co-developing.

Mentioned as: AntaresNarrative GeneralFeb 29, 2024Firefly Aerospace Expands its Briggs, Texas Facilities to Support Medium Launch Vehicle

Firefly Aerospace is supporting production of Northrop Grumman’s Antares 330 and the Medium Launch Vehicle (MLV) that Firefly and Northrop Grumman are co-developing.

Mentioned as: AntaresNarrative GeneralFeb 28, 2024Firefly Aerospace Doubles Facilities in Briggs, Texas to Support Medium Launch Vehicle

STORIES of Space Mission 01 launched on 2023-08-01 on an Antares rocket from NASA Wallops Flight Facility aboard a Northrop Grumman Cygnus spacecraft.

Mentioned as: AntaresNarrative GeneralFeb 26, 2024STORIES of Space Partners with Maritime Launch Services for a Spaceport Nova Scotia mission

The MLV will follow Antares 330 and will replace the Northrop-built solid-fuel second stage with a second stage developed by Firefly using a vacuum-optimized Miranda engine and a five-meter payload fairing developed by Northrop Grumman.

Mentioned as: antaresTechnical ProductFeb 2, 2024Firefly to continue responsive launch operations for future Alpha missions

Antares 330 will replace the Ukrainian-built first stage and Russian engines of the earlier Antares 230 with a new first stage built by Firefly using Miranda engines.

Mentioned as: AntaresOrg RelationshipFeb 2, 2024Firefly to continue responsive launch operations for future Alpha missions

The Antares 330 replaces the Ukrainian-built first stage and Russian-manufactured engines with a stage and engines produced by Firefly Aerospace.

Mentioned as: AntaresNarrative GeneralJan 30, 2024Falcon 9 launches Cygnus cargo spacecraft to space station

Most previous Cygnus missions launched on Northrop Grumman’s Antares rocket, except two that launched on United Launch Alliance Atlas V vehicles after an Antares launch failure in 2014.

Mentioned as: AntaresNarrative GeneralJan 30, 2024Falcon 9 launches Cygnus cargo spacecraft to space station

Northrop procured three Falcon 9 launches for Cygnus while it works with Firefly Aerospace on the Antares 330 rocket.

Mentioned as: antaresTechnical ProductJan 30, 2024Falcon 9 launches Cygnus cargo spacecraft to space station

Northrop Grumman is working with Firefly Aerospace to replace the Ukrainian-built Antares first stage powered by Russian engines with a stage developed by Firefly using its own engines.

Mentioned as: antaresTechnical ProductJan 27, 2024Cygnus ready for first launch on Falcon 9
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