Momentus, a U.S. commercial space company specializing in satellite technology, space transportation, and in-orbit services, announced they completed the Preliminary Design Review for the Vigoride 8 mission, a fully booked flight carrying the Spaceworks COSMIC payload and the NASA-commissioned Juno Rotating Detonation Rocket Engine (RDRE) payload. A Preliminary Design Review verifies that a mission or system’s proposed design meets all requirements and is technically sound enough to advance into detailed development. Completing this significant milestone keeps the mission on schedule for an early 2027 launch. This design work is being conducted by Momentus under two contracts it has signed with NASA.

“The successful completion of the Preliminary Design Review reflects the strength of our engineering team and the close collaboration with our customers,” said Tom Malko, Senior Vice President of Engineering and Operations at Momentus. “Vigoride 8 is a complex, fully booked mission, and this milestone confirms that our design is sound and ready to advance into detailed development. We’re proud of the progress and excited to keep driving toward launch.”

The completion of the Preliminary Design Review provides further indication of the Company’s operational progress and commercial traction that matter to our long-term trajectory.

• A fully manifested mission demonstrates early customer commitment and demand for Momentus’ in-space transportation services.
• A successful Preliminary Design Review confirms that the program is ready to enter detailed design, a key step toward maintaining schedule discipline.
• A clear path to Critical Design Review in late May 2026 provides visibility into the program’s next major milestone and supports confidence in the mission timeline.
• Investment in expanded infrastructure, including the new facility used for the review, positions the company to support higher mission throughput and future growth.

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