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NASA Headquarters senior communications official Dwayne Brown moderates a media briefing regarding the NASA InSight Mars Lander (Interior Exploration using Seismic Investigations, Geodesy and Heat Transport), Wednesday, Oct. 31, 2018 at NASA Headquarters in Washington. InSIght will land on the Red Planet at approximately 3 p.m. EST (noon PST) Monday, Nov. 26. InSight will study the deep interior of Mars to learn how all celestial bodies with rocky surfaces, including Earth and the Moon, formed. The lander’s instruments include a seismometer to detect marsquakes and a probe to monitor the flow of heat in the planet's subsurface.