At the Jet Propulsion Lab in Pasadena, California, NASA is preparing tiny satellites the size of briefcases for a mission to Mars. Called CubeSats, swarms of these small marvels could potentially take on NASA's riskiest missions—think exploring the surface of Venus or the volcanoes of Io—at a lower cost than full-size, multi-instrument satellites. Matt Davenport and JPL Chief Engineer for Interplanetary Small Spacecraft Andrew Klesh geek out on CubeSats in the latest Speaking of Chemistry episode. Watch the video here: https://youtu.be/OGmiv53La0o.