NASA has partnered with Relativity Space, a commercial aerospace company, to build and launch a spacecraft to Mars that will study the planet's atmosphere. The launch is targeted for 2028.

Here is how the partnership works: NASA provides the scientific instruments — sensors that will measure wind, temperature, dust, and clouds on Mars. Relativity Space designs and builds the spacecraft that will carry these instruments and operate the mission. Think of it like NASA providing the scientific payload and Relativity providing the delivery vehicle.

The mission is named after its main instrument, Aeolus, which is the keeper of the winds in Greek mythology. The spacecraft will orbit Mars and measure wind patterns and dust in the atmosphere from above. This data matters not only for science — it also helps engineers know how to safely land rovers and spacecraft on Mars, and how to plan any work they do on the Martian surface.

Relativity Space is best known for building rockets with 3D printers. The company is expanding beyond launch vehicles into spacecraft design — something it has never done for a deep-space mission before. Sending a spacecraft to Mars is far more complex than launching to Earth orbit. The spacecraft must travel millions of miles, navigate to Mars, slow down enough to be captured by the planet's gravity, and then operate reliably for years. NASA has worked with newer commercial companies before, but usually for missions closer to Earth. Mars is a bigger step.

Why 2028? Earth and Mars line up in ways that make travel between them possible roughly every 26 months. The late-2028 window is already a target date in space planners' schedules. According to SpaceNews on 17 June 2026, that date is confirmed. This means Relativity has about two and a half years to finish building the spacecraft, test it, and get it ready to launch. For a company doing this for the first time, that is a compressed schedule.

This schedule is the biggest risk. Building an orbiter for Mars takes years of careful work. NASA's own Mars missions, like the Mars Reconnaissance Orbiter, took many years to develop. Relativity will need to design the spacecraft, test all its communications and power systems, integrate it with NASA's instruments, and pass rigorous safety checks — all before a launch window that does not wait. Slipping to the 2030 launch window is possible.

Still, the partnership makes sense. If it works on time, NASA gets valuable data about Mars' atmosphere while Relativity becomes the first commercial company to successfully operate a spacecraft in deep space beyond the Moon. That is a major step forward for commercial spaceflight.

Scientists studying Mars already have some atmospheric data from rovers on the surface and from the MAVEN spacecraft, which orbits the planet. But there is a gap: no mission has mapped winds and dust globally from orbit in the way Aeolus is designed to do. That gap is real. Filling it depends partly on whether Relativity can deliver.