01/10/2025

NASA Considers Cheaper, Faster Ways To Retrieve Mars Samples

A mars rover on the dusty, pinkish desert surface of Mars, with its tracks zigzagging into the hazy background.
NASA’s Perseverance Rover captured this image of its own tracks in the Jezero Crater on Mars in October 2024. Credit: NASA/JPL-Caltech

NASA’s Mars Sample Return mission is an ambitious project that aims to use the Perseverance rover to collect Martian rocks, sand, and even gulps of Martian air. Then, through a complicated handoff between different spacecraft, it would ferry those samples to Earth.

A 2023 assessment found that the original plan to retrieve the samples would be much more expensive, and take much longer, than initially expected.

This week, NASA announced two options on how to cut costs and bring the samples to Earth by the late 2030s. But the agency did not solidify a plan, leaving it to the next administration to sort out around 18 months from now. Is the project on the rocks?

To get up to speed on the mission, Flora Lichtman talks with Dr. Jim Bell, professor of earth and space exploration at Arizona State University, and distinguished visiting scientist at NASA’s Jet Propulsion Laboratory.


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Segment Guests

Jim Bell

Dr. Jim Bell is a Distinguished Visiting Scientist at NASA’s Jet Propulsion Laboratory and a professor of Earth and Space Exploration at Arizona State University in Tempe, Arizona.

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D Peterschmidt is a producer, host of the podcast Universe of Art, and composes music for Science Friday’s podcasts. Their D&D character is a clumsy bard named Chip Chap Chopman.

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Shoshannah Buxbaum is a producer for Science Friday. She’s particularly drawn to stories about health, psychology, and the environment. She’s a proud New Jersey native and will happily share her opinions on why the state is deserving of a little more love.

About Flora Lichtman

Flora Lichtman is a host of Science Friday. In a previous life, she lived on a research ship where apertivi were served on the top deck, hoisted there via pulley by the ship’s chef.

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