Cache and Not Carry: Next Mars Rover to Collect Samples for Return to Earth—Someday Scientific American

Have rover, need payload. That’s the state of things for NASA, which is planning to launch its next rover to Mars in 2020. The rover has ambitious goals, including searching for signs of habitability and life on the Red Planet, and collecting rock samples to be stored for future return to Earth. Now, NASA is asking scientists to propose instruments that will help the spacecraft accomplish its mission.
The space agency released an “announcement of opportunity” on September 24 calling for proposals by December 23. Researchers who plan to put an instrument in the hat must file a heads-up about their plans, called a notice of intent, by October 15.