How many spaceman minifigure variations exist? I was looking at collecting all the different Spaceman minifigures.  So I'm wondering how many different types(styles) of Spaceman do exist.  Color variations is not necessarily but it would also be interesting to know that.  

Note: Only astronauts (not robots &amp; aliens)

So far I only have those three:
A full list of space related minifigures can be found on Bricklink here as well as under the Town theme. If you count fantasy themes there are also many astronaut minifigures under Alien Conquest, Blacktron, Life on Mars, Mars Mission, Space Police, etc...

There is also the Spaceman from the 1st Collectible Minifigure series.