Arto's solution to the mysterious cracker toy has sent me off looking for more EXPLORING SPACE carded sets. The trouble with the blog is that I forget what we've covered and it would seem that we looked at these sets back in 2010, as my google search brought me back to Moonbase!
The EXPLORING SPACE sets all appear to have the same backing card and appealing header art, a different coloured fish ship and an astronaut in various positions. There's also a set containing just four of the astronauts. Back in 2010 reader Maverick said that they were MPC copies.
The question still remains: where is the odd fish-like spaceship design from? and who is sat in the ship?