Robotic missions into space may be able to go much further, but there's something special about a spacecraft that's designed to not just send knowledge about space back to us, but to actually send us up into it. This chart sketches out the history of the spacecraft that have done just that.
Reddit user Heaney555 posted this marvelous, fully-scaled chart of all the vehicles that have carried humans out into space. Really want to get a sense of the incredible scale of some of these spacecraft? Look a little closer at the chart. Even closer. Yep, those are tiny little astronauts — also to scale — representing the capacity of each spacecraft.