Outer space, planets, comets, stars, asteroids, and space shuttles are all the name of the game here. The Sun spaces our entire galaxy. Being three-hundred thousand times larger than Earth it bullies all the planets around with the massive gravity it creates. Did you know why the concept of footprints on the moon is such a big deal? It’s because they stay put forever. There is no wind or forms of erosion on Luna (our moon) to disrupt the footprints that are in place. The best part of this all is that we barely scraped the surface (literally) with our understanding of outer space. We have a Caveman’s knowledge of things outside of the immediate viewing vicinity.
We spend a good amount of time on understanding the development and application of telescopes in our process of understanding what is inside and outside of our galaxy.