Kate decided to try to control her rolling. She stretched herself out as much as possible, hoping that if she distributed her weight more, the hamster ball would slow down. Now she was tumbling in what felt more like cartwheels than somersaults. And she was finally starting to get dizzy and a little bit nauseous. But on the plus side, she was rolling more slowly now.

When she rolled to a stop, Kate took a deep breath. That was exhausting. Who knew Astronomy would require so much exertion? At least it still smelled nice, like the ocean and freshly cut grass.

Kate smiled and rolled herself a little bit farther until she was just past where she had started from. To stop herself, she then took a step backwards, smiled happily and sat down in her planet costume. She had successfully completed an orbit around the sun, and she hadn't even broken a sweat!