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Rocket Report: Northrop Backs Firefly and Names Its Rocket; Xodiac Will Fly No More

  • Northrop Grumman and Firefly Aerospace announced on May 29, 2024, their partnership to develop a medium-lift rocket named Eclipse, based in the US with launches from Wallops Island, Virginia.
  • The collaboration follows Northrop having used its last Russian-built first-stage engines for the Antares rocket in 2023, prompting the development of Antares 330 with Firefly's Miranda engines as an interim step.
  • Eclipse will feature a redesigned first stage derived from Antares 330 and Firefly's Alpha propulsion, aiming to carry about 16,300 kilograms to low Earth orbit and support commercial, scientific, and national security missions.
  • Northrop Grumman invested $50 million in Firefly’s $175 million Series D round to accelerate Eclipse’s development; CEO Jason Kim called Eclipse a "sweet spot" for National Security Space Launch Lane 1 programs.
  • The partnership intends to restore Northrop’s medium-lift launch capacity domestically by 2026, positioning Eclipse as a competitive option below Falcon 9 and Vulcan, while expanding government and commercial launch services.
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satnews.com broke the news in on Thursday, May 29, 2025.
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