After the longest gap in American spaceflight history, NASA will again launch its astronauts from the U.S. starting this spring.
The first SpaceX launch with astronauts on board has been a long time coming but to understand the importance of the upcoming historic launch, you need to look at how far human spaceflight has progressed since the first space explorer.
Leading up to the May 27 launch of NASA astronauts Doug Hurley and Bob Behnken, we’re taking a look back at milestones in U.S.
human spaceflight that paved the way for future astronauts. Previous stories in this series highlighted the Mercury and Gemini projects, the historic Apollo Project and the Space Shuttle Program.