If you're playing a second time be sure to click green flag TWICE. Use the space button to move and jump to the planets. right arrow to boost, left arrow to brake.Avoid the edge, asteroids and the sun, If you run out of fuel you die. hitting the moon automatically transports you to earth. The asteroids glitch a bit. Land on a planet to refuel, it gets a little laggy when refueling. BE SURE TO LIKE AND FAV BELOW :D check out http://scratch.mit.edu/projects/11367132/ ,which was the original planet jump I created.
Thanks to flameingsword1 for original. This has free exploration.