Momentus

Momentus Inc, operating as Momentus Space, is an American commercial space company headquartered in San Jose, California. It designs and manufactures in-space infrastructure, providing orbital transportation, hosted payloads and in-orbit servicing for commercial and government clients, centered on its Vigoride Orbital Service Vehicle, which uses proprietary microwave electrothermal thrusters powered by water propellant. Originally focused on commercial satellite rideshare work, the company shifted its strategy under former Under Secretary of Defense for Policy John Rood toward government infrastructure projects such as autonomous rendezvous, proximity operations and in-space assembly, and now works as a contractor for DARPA, NASA and the United States Space Force.