Page 49 - Curriculum Visions Dynamic Book

 We can see the shape of this galaxy because it is far from us, and we are not part of it.
Another new rule that we need when dealing with space is called the cosmological principle. It states that wherever you are in the Universe, and in whatever direction you look, the Universe seems much the same. Its importance is that it suggests that the Universe has no edge.
The Universe has a structure
Let’s begin by looking for some order in the Universe. In this book we have seen how stars form parts of large
cosmological principle States that the way you see the Universe is independent of the place where you are (your location). In effect, it means that the Universe is roughly uniform throughout.
theory of relativity A theory based on how physical laws change when an observer is moving. Its most famous equation says that at the speed of light, energy is related to mass and the speed of light.
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