If you look up the definition of astronomical, you may be left feeling immediately overwhelmed. Something so astronomically large that it’s incomprehensible to our brains. How do we put that into perspective? We create units to bridge the gap of the incomprehensible. The next star in our vicinity (after our sun) is Proxima Centauri, and it is about 38,000,000,000,000 kilometres away from us. According to the big picture, that's just around the corner. It takes only 75,000 years to get there with your supersonic rocket. Then you’ll have travelled 4.2 light-years. Astronomi-cool!