BOOST for Engines Act

This bill directs NASA to modernize its rocket engine testing facilities to improve capabilities, safety, and support for both government and commercial space programs. It requires prioritizing investments for large rocket engines, multi-engine testing, and making underused facilities available to commercial companies on a reimbursable basis. The law also ensures that modernization efforts won't delay critical government projects like the Space Launch System or nuclear propulsion testing. Commercial space companies and NASA facilities are the primary entities directly affected by these infrastructure upgrades.