Night A star’s light travels in a straight line across the Universe until it reaches Earth, so that its position when photographed at night corresponds with its true location.
Eclipse During eclipse, the starlight’s trajectory is deflected as it passes near the sun, whose mass curves the surrounding mesh of space-time, according to general relativity. Light changes direction as it passes through this region.
The measure According to Einstein's calculations, the deflection angle of light is 1.75 arcseconds, about twice what other physicists predicted based on Newton's law of universal gravitation.
Why light changes its trajectory
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