Assessment
Rocket 4 is an expendable two-stage rocket burning liquid oxygen and RP-1 that is in development. Astra targets a capacity of 1 tonne to low Earth orbit over the product lifecycle, and in January 2026 it said it was focusing on a 2026 test flight.
Technical data
Height18.9 m
Diameter1.8 m
Stages2
PropellantLOX/RP-1
ReusabilityExpendable
Lead time–
Price
Price on requestPrices shown are the providers' official figures and are always non-binding – only the individual quote is binding.