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Momentus builds small spacecraft and the engines that move satellites around in space, selling rides and hardware to governments and companies that need to reposition things in orbit.
Momentus is a space company that sells two related things: small satellites built for customers, and a line of compact rocket engines called propulsion systems that let spacecraft change their position in orbit. Its customers are mostly commercial satellite operators, government agencies, and research groups that need to launch a small satellite and then move it where they want it — something many small satellites historically could not do.
The core problem it solves is maneuverability. Most small satellites get dropped off in roughly the orbit their rocket happened to deliver them to, and without an engine they are stuck there. Momentus makes thrusters that use a heated, water-based propellant — simpler and cheaper to handle than the toxic chemicals traditional satellite engines rely on — so a satellite can raise its orbit, dodge debris, or move to a different location after launch. Customers pay for the hardware itself and for services, including "rideshare" launches where multiple small satellites share one rocket and each needs its own way to reach its final spot. Financially, it is a small, early-stage company with a rough history. Momentus went public in 2021 through a merger with a special-purpose acquisition company, and shortly afterward its founding chief executive was pushed out and later faced federal charges related to misleading investors about the company's technology and testing. It has posted losses and needed repeated fundraising to stay alive, and in 2024 it did a reverse stock split to keep its share price above the minimum needed to stay listed on Nasdaq. Revenue has been minimal relative to its costs, which is typical of companies still proving out their hardware. The bet is that as small satellites become more common, more of their owners will want engines and maneuverability, and Momentus wants to be the supplier of both the thruster and, in some cases, the whole satellite. The risk is straightforward: it is a capital-hungry hardware business competing against larger, better-funded players, and it must convert its technology into steady, profitable deliveries before its cash runs out.
Saved answer · last researched 22 Oct 2026
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