Annie Marinan, MarCO-B Missio Manager, NASA JPL, left, and Andy Klesh, MarCO chief engineer, NASA JPL, talk about Mars Cube One (MarCO) during a social media briefing, Sunday, Nov. 25, 2018 at NASA's Jet Propulsion Laboratory in Pasadena, California. InSight, short for Interior Exploration using Seismic Investigations, Geodesy and Heat Transport, is a Mars lander designed to study the "inner space" of Mars: its crust, mantle, and core. InSight is scheduled to touch down on the Red Planet at approximately noon PST (3 p.m. EST) on Nov. 26. Photo Credit: (NASA/Bill Ingalls)

Andy Klesh, MarCO chief engineer, NASA JPL, left, and Annie Marinan, MarCO Systems Engineer, NASA JPL discuss NASA's Mars Cube One (MarCO) technology demonstration mission during a prelaunch media briefing, Thursday, May 3, 2018, at Vandenberg Air Force Base in California. MarCO, which is a separate mission launching on the same rocket at NASA’s InSight mission to Mars, will test new miniaturized deep space communication equipment. Photo Credit: (NASA/Bill Ingalls)

During a prelaunch briefing at Vandenberg Air Force Base in California, Annie Marinan, MarCO Systems Engineer at NASA's Jet Propulsion Laboratory, speaks to members of the media. The presentation focused on NASA's Interior Exploration using Seismic Investigations, Geodesy and Heat Transport, or InSight, Mars lander. InSight is scheduled for liftoff May 5, 2018, atop a United Launch Alliance (ULA) Atlas V rocket from Space Launch Complex 3 at Vandenberg. The spacecraft will be the first mission to look deep beneath the Martian surface studying the planet's interior by measuring its heat output and listen for marsquakes.