Earth, stars, planets and space are all relative to the first date that time was created. I have studied for hours, days, weeks infact years for an answer and came across your post. The relative dimensions of the universe matters not. The humans that live inside the universe are important and the existance of what is perceived and regarded as possible for example alian's never existed, we can't see them or find them remember. The earth lives in the universe as a planet, earth would love humans for their existance there. if we settled on earth together, we should love each other as earth would love us for been there. Humans need to eat and the earth provides soil to grow vegetables, then there are minerals such as water. We have seasons that for some countries assist us in adapting to weather, those that have one season are not alone but different. The earth and humans are two seperate matters of education but we live together as planets do in the solar system and as the universe ventures out to find more space, humans travel further to find a new home.
Humans are the most important existance in the universe.