You’ve seen it in movies and heard it from everyone, but do you really know is the what the speed of light?
What is the speed of light?
An astronomer had once determined that light moves at a speed of 301.000 kilometers per second. Earth’s rotation around the Sun was the basis of his calculation.
Since then, there have been several theories, and it’s concluded that the speed of light differs when traveling through different objects. For example, light travels at its maximum speed in space, but it drops a little when traveling through air. When in diamond, the speed of light is at its lowest.
How fast is the speed of dark?
The energy present in a dark atmosphere is about 80 percent of all matter in the universe. Years back, astronomers determined the speed of dark matter is about 54 meters per second, slower than the speed of light.
In how long does light travel from the Sun to Earth?
Because the Sun is about 150 million kilometers away from Earth, it takes about 8 minutes and 19 seconds for the light to travel from the Sun to Earth. It might seem like a lot of time, but in fact, when compared to the fact that it takes almost 40,000 years for photons to move from the Sun’s center until its surface.
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