While Suni Williams and Butch Wilmore’s situation is unusual, their return trip will be pretty routine, as they were already slated to fly home on a SpaceX capsule as part of a scheduled crew rotation.

Then along comes Musk, with one of the world's loudest microphones, shouting that NASA's astronauts are stranded and that President Trump wants them saved. It's a bombshell thing for the founder of SpaceX, who has become a close advisor to Trump, to say publicly.

U.S. President Donald Trump on Thursday dismissed criticism from close ally Elon Musk about a $500 billion artificial intelligence project that Trump announced with great fanfare at the White House earlier this week.