Continued from Part 1


Beyond Earth

The first prediction of Einstein’s Theory of General Relativity that was put to the test was the apparent bending of light as it passes near a massive body.  This effect was conclusively observed during the solar eclipse of 1919, when...

In a perfectly simple world -- that is, a vacuum -- light travels in a straight line.  (A vacuum here refers to space that has no material or pressure.)  Light, however, zooms around in our complicated, imperfect Universe and that’s when things tend to get interesting....

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