In the second half, the probe is launched into space. Perhaps it lands on the Moon, or a comet, or Venus, or Io or somewhere else that is cool. Then they go around taking pictures of neat things that happen to be in the location.
The target audience will initially be children between the ages of 8 to 13. The goal of the game is to encourage interest in science and exploration. This means the language of the game must be simple to understand. The controls must be very easy and self explanitory.