In a shift for NASA’s Commercial Resupply Services (CRS) program, the agency and Sierra Space announced today a mutual agreement to modify their contract concerning the Dream Chaser spaceplane.

Instead of committing to a series of resupply missions, Sierra Space will now focus on a free-flight demonstration targeted for late 2026, while NASA will provide only minimal support for the remaining development phase.

Under the revised agreement NASA is no longer bound to purchase a defined number of resupply missions from Sierra Space. If the free-flight demonstration is successful, NASA retains the option to contract later resupply missions via the current framework.

NASA’s involvement will scale back to a minimal supporting role for the remainder of the project and the demonstration itself.

“Development of new space transportation systems is difficult and can take longer than what’s originally planned.  The ability to perform a flight demonstration can be a key enabler in a spacecraft’s development and readiness, as well as offering greater flexibility for NASA and Sierra Space,” said Dana Weigel, manager of NASA’s International Space Station Program.

“As NASA and its partners look toward space station deorbit in 2030, this mutually agreed to decision enables testing and verification to continue on Dream Chaser, as well as demonstrating the capabilities of the spaceplane for future resupply missions in low Earth orbit.”

Dream Chaser was born out of NASA’s Commercial Crew Development (CCDev) program, initiated in 2010. NASA awarded Sierra Nevada Corporation (SNC), the original developer of Dream Chaser, over $300 million across multiple Commercial Crew Development (CCDev) phases.

In 2016, NASA selected Dream Chaser under the Commercial Resupply Services 2 (CRS-2) contract, alongside SpaceX and Northrop Grumman. NASA committed to at least six resupply missions to the ISS using Dream Chaser, starting no earlier than 2020, later delayed to 2023, then 2024, and now late 2026.

The Dream Chaser cargo variant, called Tenacity, was designed specifically to fulfill these missions and was slated to fly on one of the United Launch Alliance Vulcan certification flights. Those Vulcan flights have come and gone, and Tenacity has remained at Kennedy Space Center, ostensibly in preparation for its maiden flight. At this point in time, it is unclear if the spacecraft will remain here in Florida, or will return to Sierra’s facilities while work on Tenacity is completed.

Now, under the revised agreement, NASA’s role is being reduced to minimal support, as Sierra Space leads the flight demo independently. If successful, NASA may still procure future cargo flights, but it is no longer obligated to do so.

This leaves Dream Chaser with an uncertain future: it is clearly having problems finalizing its development, and once that development is completed, there is no guarantee that NASA will be a customer. Given that ISS operations are slated to end in 2030, the space agency may opt to pass on the Dream Chaser entirely and continue to rely on SpaceX and Northrop Grumman’s proven platforms instead to retire risks in ISS logistics.

Should that come to pass, Sierra Space could have a completed orbital spacecraft with no immediate customers. That’s the bad news. The good news is that an offering of supply services aboard an already certified platform that is launcher-agnostic might be compelling to commercial space station vendors, provided the price is right.