NASA scientists show how slow the speed of light is in three videos


Scientist James O & # 39; Donoghue made several videos to show that compared to the size of the universe, the speed of light is not a big problem.

Because we go to school and see our first physics class, we learn that the speed of light is almost 300,000 kilometers per second in vacuum At that time we also learned that theoretically no object can overcome that speed. The fact of being able to overcome it is, at least until now, unimaginable outside science fiction.

That is why it would be strange if someone told us that the speed of light was not too fast. After all, what can be compared so that the light looks as if it's slow? Apparently, a NASA scientist has the answer.

James O & # 39; Donoghue are planetary scientists working at NASA's Goddard Space Flight Center. One of his last projects was to calculate and explain through various thematic animations about the solar system. Among these are a group of three videos that show how long light has to travel a certain distance in space.

One animation is crossing Earth, the other from Earth to the Moon and the last traveling from Earth to Mars. The results are impressive because of the famous travel time increased.

Crossing the Earth

Ecuador from our planet only measures a little more than 40,000 kilometers. It's not much for the speed of light, because the photons can circle the world 7.5 times in one second. Obviously in this case it looks fast.

From Earth to Moon

Between Earth and satellites there is an average distance of 384,400 kilometers. In this distance to the light, it does not need a lot of money to travel, because it does it fairly 1.255 seconds.

From Earth to Mars

However, here is a real difference. In the closest approach that Earth and Mars have, the two planets are at a distance of 54.6 million kilometers. This means about 3 minutes and seconds of displacement. In total, traveling back and forth, the trip takes 6 minutes and four seconds.

Besides that, it's worse …

Since then the scales have become too frustrating. For example, the distance from the Sun to Earth is 149.6 million kilometers, which causes light to be delayed by about 8 minutes and 19 seconds.

Worse is if we examine the average distance from the Sun to Pluto, which is almost 6 billion kilometers. If we look further, the extrasolar planet closest to us is 4.2 light years away from us.

In conclusion, even in terms of reaching the speed of light, it would be very difficult for humans to know space outside the solar system.

NASA scientists show how slow the speed of light is in three videos


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