A student-built gel experiment rode a cargo flight this morning — aimed at one of the hardest gates on the road to Mars. The most important Mars launch of the week was not a Mars launch. At 6:33 a.m. EDT on Tuesday, October 13, a SpaceX Falcon 9 lifted off from Space Launch Complex 40 at Cape Canaveral Space Force Station on NASA's CRS-35 mission. The booster, flying for the eighth time, returned about eight minutes later to Landing Zone 40, with sonic booms rolling across th