SpaceX Polaris Dawn Mission Delayed Due to Technical Issue

The Polaris Dawn mission, a SpaceX capsule launch, has been postponed due to a helium leak at the launch pad. The mission, which was set to lift off on Tuesday from NASA's Kennedy Space Center, will now target an early Wednesday launch. The launch will carry billionaire entrepreneur Jared Isaacman, retired Air Force Lt Col Scott "Kidd" Poteet, and SpaceX engineers Sarah Gillis and Anna Menon to a peak altitude of 870 miles (1,400 kilometers). This mission marks the first with non-professional astronauts and would have included the first civilian spacewalk.