HENNING DALHOFF / SCIENCE PHOTO LIBRARY HENNING DALHOFF / SCIENCE PHOTO LIBRARY
Computer illustration of a NEPTUNE system launch vehicle leaving Earth. The NEPTUNE rockets are being developed by the private aerospace company Interorbital Systems (IOS). The NEPTUNE rockets are a modular launch system designed to be low cost. The base module is the Common Propulsion Module (CPM). Multiple CPMs are combined to meet a mission's requirements. Ocean-based launch sites are also used to minimise costs.
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