SpaceX’s Polaris Dawn mission just made history. But the riskiest part is still to comeSpaceX’s Polaris Dawn mission just made history. But the riskiest part is still to come 

SpaceX’s Polaris Dawn mission kicked off early Tuesday, launching a four-person crew of civilian astronauts into orbit. And hours later they have already made history: reaching the highest orbit around Earth and surpassing a record set during NASA’s earliest days.