Keep in mind that the rocket has a constant thrust, but your taps apply gravitational force. Force, remember, is mass times acceleration. Your first tap might just slow down the rocket a bit, while the second can already move it downwards. The more times you tap quickly, the faster the rocket moves, but also the further. If you go down too fast, you can't stop it! So be careful. Controlling gravity is a mighty ability, but with great power comes great responsibility. Keep the astronauts in the rocket save as long as you can.
And once you're done, share your score on the Google Play Games Leaderboard with your Google+ account. Prove that you are the best to everyone!