Science has come a long way and it explains so much of what goes on around us. Though you may or may not always think about it, you are part of a universe and that is what makes up what you and everyone else calls a reality. The universe is the place you live and you are a part of it.
Religious notions aside, science has come to some interesting theories about the universe. One of these is the expanding universe theory, which is a science unto itself. It states that the universe is constantly expanding and that is why there is so much creation and change.
While that may sound a bit odd at first, how can you really know unless you are one of the amazing scientists who figured this out? You can learn all about it from the right materials and references. There is plenty of information available to help you understand and you should educate yourself.
Maybe you already understand the theory and you are a teacher who wants to teach it to students. You are in luck because you will find a huge selection of teaching aids and references that your students will find very useful to help with the understanding of the theory.
Look for an online store that sells material to help with both learning and teaching on the subject. No matter how much you think you know, the theory is very deep and complex. As stated, it is its own science but it is well understood so you can get all of the facts yourself and decide at your own pace.
All it takes are the right learning materials and references to get the bigger picture. Find books and charts and much more in a single location to help with a better understanding of how the universe is expanding.