I can appreciate the scale of the game world, the realism of the physics and the difficulty of the task. Personally I found it way too difficult. By the time I learned to control spinning and grabbed the first asteroid, the mothership was already too far away. I didn't have the patience to wait for the entire sun rotation, and racing was too difficult (the direction to the mothership is not visible). So yes, I didn't have the patience to complete the first mission.
Very nice graphics.