Crew Dragon and the astronauts have now made it through two major milestones — launch and docking — without encountering any major issues. That's a huge win for SpaceX, which has been working toward this moment since the company was founded in 2002.
It's also a point of celebration for NASA, which made the controversial decision to ask the private sector to design vehicles for transportation to the ISS after the Space Shuttle program retired in 2011. NASA has long partnered with the private sector, but it had never before handed over design, development and testing of a human-rated spacecraft to a commercial company.