An Expanding Universe
You’ve read about how originally there was nothing, and then suddenly….BOOM! And how the Universe started expanding, etc… But when you think about it… What’s really expanding? Is it the galaxies that are moving away from each other? Or is it the space between the galaxies that’s stretching, making galaxies move farther and farther from […]
Spacetime and Light-Cones
Did you know that there were four dimensions? We are living in a four dimensional world…all the time. And time is the fourth dimension.
It is impossible to imagine a four dimensional space. However we know it exists.
In old theories, space and time were independent from each other. In relativity however time and space cannot be […]
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