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Argo Space

El Segundo startup building reusable space tugs that run on water. They launch to low orbit cheaply, then carry satellites on to geostationary orbit or the Moon, and are designed to be refueled in space.

Products, by altitude

Earth to Moon · 35,786–384,400 km

  • Testing

    Argonaut

    Water-powered space tug that hauls satellites to higher orbits

  • In development

    Chiron

    Small water-powered spacecraft that carries and drops off payloads

Known rounds

DateRoundAmountLed by
Oct 2024Seed$7.9MCrosslink Capital⁠1
Apr 2023Funding round (series not stated)$2MType One Ventures⁠2

Milestones

  • Sep 2026 Argo and ispace-U.S. signed a definitive agreement for Argonaut to carry ispace's Alpine relay satellite to lunar orbit on a mission planned for as early as 2027. Company statement⁠3
  • Dec 2023 Argo announced a $1.7M Direct-to-Phase II SBIR contract from SpaceWERX, the U.S. Space Force's innovation arm. Company statement⁠4

Sources

  1. Argo Space press releaseOct 3, 2024
  2. TechCrunchApr 13, 2023
  3. Argo Space and ispace-U.S. joint press releaseSep 17, 2026
  4. Argo Space press releaseDec 14, 2023
  5. Argo Space press releaseJun 29, 2025

Updated Oct 22, 2026 · How we source facts · Suggest a correction