Press up arrow to jump, and down arrow to slide. Avoid the obstacles for as long as possible, and try to beat the high score. Good Luck! :)
There might be some unpassable barriers like meteor shards on top of rocks. You'll just have to restart. The stars, Earth, boulders, and dust clouds don't do anything. Also thanks to @raymondyang1. I remixed a project of his but it didn't credit.