
SpaceX's historic Polaris Dawn astronaut mission has been delayed again.
Polaris Dawn was originally scheduled to launch early Monday morning (Aug. 26) from NASA's Kennedy Space Center in Florida, but SpaceX pushed things back a day to perform more preflight checkouts. The company then called the planned Tuesday (Aug. 27) attempt off after detecting a helium leak, targeting Wednesday (Aug. 28) instead. But now Mother Nature has foiled that plan.