SpaceX Crew-3 members Tom Marshburn, Kayla Barron, Raja Chari, and Matthias Maurer are preparing for their trip to the ISS (International Space Station), currently delayed until Wednesday, from Florida’s Kennedy Space Center. It’ll be the fourth time NASA has sent astronauts to the ISS using SpaceX’s Dragon capsule. The four are expected to spend six months in orbit, playing host to an assortment of civilian space tourists during their stay. “I think they’re all pioneers, they’re taking risks. And as a result, they’re expanding the boundaries for what humans can do,” says NASA astronaut Tom Marshburn, who’ll be acting as pilot on the mission. “One of these days, we can’t just have highly selected folks who train for years to go into space, we do want the situation where people can buy a ticket and go.” This will be SpaceX’s fourth launch of NASA astronauts and its fifth passenger flight overall. …