Hi ! :)
Have you ever thought about it? We all really traveled through time. It might not make sense at first because for me it wasn't. But if you think about it, it really seems like it.
We all travel back in time at a certain point. During this past year, I have moved forward one year, and you have too. Another way of saying that is by saying that we travel through time at the speed of 1 hour per hour. But the question is, can we travel through time faster or slower than "1 hour per hour"? Or can we really travel back in time, going back let's say 2 hours per hour, or 10 or 100 years per hour? something a bit far from our reach but not impossible.
The speed of light in a vacuum is 299,792,458 kilometers per second (close to the round figure of 300,000 km / s). The Sun is 150 million km from Earth and it takes only eight minutes and 20 seconds for light to travel that distance. The speed of light in a vacuum is a universal constant with the value of 299,792,458 m / s (186,282,397 mi / s), although it usually approaches 3 · 108 m / s. It is symbolized with the letter c, from the Latin celéritās (in English, speed or speed).To calculate how much a light year is, you must multiply 300,000 km / s (speed of light) by 365 days (duration of a year) and by 86,400 (seconds that a day has). This calculation is approximately equivalent to 9.46 × 1012 km, which are more exactly: 9,460,730,472,580.8 km.
Traveling faster than light involves traveling backward in time. ... This, the textbooks say, is precisely the kind of absurdity that makes it impossible for anything to travel at a speed greater than that of light in a vacuum: 300,000 kilometers per second, known as c.
Incredible true. Nowadays we don't have the technology for all that but it is not impossible