NASA has awarded five companies contracts to mature sustainable lunar landing concepts as part of its Artemis program, the agency said Tuesday.

DyneticsLockheed Martin [LMT], Northrop Grumman [NOC], Blue Origin, and SpaceX received firm fixed-price, milestone-based contracts that are worth a combined $146 million. These awards fall under the Next Space Technologies for Exploration Partnerships (NextSTEP-2). The selected will develop lander design concepts, evaluate their performance, design, construction standards, mission assurance requirements, interfaces, safety, crew health accommodations, and medical capabilities.

These awards are separate from the Human Landing System (HLS) contract SpaceX won in April for $2.9 billion. SpaceX is set to build the first lunar lander under this contract. Blue Origin has protested the HLS award, and litigation is ongoing.

Dynetics, a Leidos company, won the largest award with $40.8 million; followed by Lockheed Martin with $35.2 million; Northrop Grumman with $34.8 million; Blue Origin with $25.6 million; and SpaceX with $9.4 million.

“Establishing a long-term human presence on the Moon through recurring services using lunar landers is a major Artemis goal,” said Kathy Lueders, NASA’s associate administrator for Human Exploration and Operations. “This critical step lays the foundation for U.S. leadership in learning more about the Moon and for learning how to live and work in deep space for future missions farther into the solar system.”

This article was originally published in our sister publication Via Satellite.