SpaceX again delays launch of Polaris Dawn mission

(NewsNation) — SpaceX is still preparing for its Polaris Dawn mission, poised to make history with the first private spacewalk, after it was again delayed due to "unfavorable weather forecasted."

The mission, a risky endeavor previously undertaken only by government astronauts, was set to take off as soon as 3:38 a.m. ET Wednesday at NASA's Kennedy Space Center in Florida, but now won't launch until at least Friday, weather permitting, SpaceX announced.

"Our launch criteria...