AST SpaceMobile vs. Firefly Aerospace: Which Outer Space Upstart Is a Better Buy in 2026?

The article compares two space economy companies with different business models. AST SpaceMobile is building a satellite-based cellular broadband network with major carrier partnerships, while Firefly Aerospace provides launch services and lunar landers for government and commercial customers. Both are unprofitable but show strong revenue growth. The author recommends Firefly Aerospace as the better buy due to its lower valuation (P/S ratio of 12.9x vs 149x), successful lunar landing achievement, and NASA partnership, despite both companies carrying significant execution risks.