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Published on Mar 3, 2011
How long does it take for the sun's light to reach Earth? Feel like a sunray particle and discover it with us. Ride in our science fiction spaceship, the Columbus, on date April 14th of 2017.
In this simulated travel we will pass between Mercury and Venus. Fortunately the spaceship won't crash with the Earth, as the trip takes 8 minutes and 24 seconds (average time may vary), and in that time, the Earth will have moved around 15,000km in space.
That means that, if we were to try to hit the Earth with a laser positioned as far as the Sun is, we would have to point it to where the Earth would have been placed 8 minutes and 24 seconds later, 15,000km away, or the laser hit would miss. If you think it like that, isn't light speed amazingly slow?
Curiously, on the side of the astronauts, or the light particle, the time would have been suspended, because time is stopped when travelling at light speed. At least the time as we know it.
The red shift & blue shift that can be seen from the spaceship view is due to the doppler effect in light.