ROSA follows ESA’s exit from cooperation with Roscosmos after Russia’s 2022 invasion, with the rover originally relying on Russian landing-stage components and a Proton launch vehicle.

NASA has approved the Rosalind Franklin Support and Augmentation (ROSA) project to back ESA’s Rosalind Franklin Mars rover, including braking engines for the descent stage, radioisotope heater units, electronics, and a mass spectrometer, with SpaceX’s Falcon Heavy contracted to launch in late 2028.

The White House FY2027 budget proposal omits ROSA funding, signaling a 47% cut to NASA’s Science Mission Directorate and a broader set of canceled science missions eyed by analysts, including ROSA, New Horizons, OSIRIS-APEX, and Juno.

To enable the mission despite funding uncertainties, the launch arrangement ties ROSA to an American launch vehicle by requiring NASA-supplied radioisotope heaters, maintaining collaboration even as Russia’s involvement winds down.

The project faces a tightly coupled engineering challenge that combines Russian-origin design elements with American hardware to enable drilling two meters into Mars for biosignature detection.

This clash highlights a broader institutional tension: procurement signs a contract in the same week the White House proposes defunding the program, suggesting planning bias toward congressional outcomes over executive policy.

Congressional reaction is mixed, with bipartisan concern and attempts, including efforts by Sen. Jerry Moran, to restore funding toward 2026 levels to preserve science and exploration programs.

The ROSA plan depends on NASA-supplied radioisotope heaters and a US launch, linking the rover’s fate to American launch capabilities despite ESA’s withdrawal from Russian components.

Mars launch windows recur roughly every 26 months, and the late-2028 window is pivotal; missing it would push surface operations to 2030–2031 with higher costs and qualification demands for ESA and partners.

Ultimately, Congress will decide whether ROSA proceeds, shaping international partnerships and NASA’s exploration pipeline depending on funding outcomes.

ROSA’s timeline hinges on hardware qualification, cruise-stage integration, and launch processing, which must stay on a fixed cadence even amid funding ambiguity.

Past funding battles show ongoing political contention, with senators urging a multibillion-dollar increase for NASA science to protect missions like ROSA.