Perseverance has collected 30 samples on Mars so far, according to NASA, with six empty tubes left unfilled. But the agency is still working on a plan to bring them back.
NASA previously laid out plans to land a spacecraft carrying Martian specimens at a U.S. Air Force testing range in Utah. But such a mission would cost billions and take years to complete — and in May, President Trump proposed cutting funding for the Mars Sample Return program, calling it "financially unsustainable." Earlier this year, the agency said it was weighing two different options for how to land and load the samples from Mars' surface.