#1919 - 18¢ Comprehending the Universe

The Universe comprises everything that physically exists: the entirety of space and time, all forms of matter, energy, momentum, and the physical laws and constants that govern them. While it remains unclear whether the size of the Universe if finite or infinite, the observable Universe is so large as to be difficult to comprehend. Entry level Astronomy classes often begin by helping students understand the distances between entities at opposite ends of the Universe. Scott 1919 Comprehending the Universe

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#1919 - 18¢ Comprehending the Universe
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