Will we ever travel light years?

Despite what science fiction may suggest, humanity will never be able to travel at the speed of light. That said, we could theoretically get close. To cause the fewest problems for our human occupants, it would best to maintain the acceleration our body is familiar with: Earth's gravitational pull.



People Also Ask

Nothing can travel faster than 300,000 kilometers per second (186,000 miles per second). Only massless particles, including photons, which make up light, can travel at that speed. It's impossible to accelerate any material object up to the speed of light because it would take an infinite amount of energy to do so.

MORE DETAILS

Most of us already know that darkness is the absence of light, and that light travelsat the fastest speed possible for a physical object. So, what does this mean? In short, it means that, the moment that light leaves, darkness returns. In this respect,darkness has the same speed as light.

MORE DETAILS

For reference, light takes about 1ns to travel the length of your brain, so that's 20,000,000 times faster than thought. Much, much slower. Connections between neurons can be fast, using electrical signals, but still take 0.2 ms to transmit.

MORE DETAILS

Particles whose speed exceeds that of light (tachyons) have been hypothesized, but their existence would violate causality and would imply time travel. The scientific consensus is that they do not exist.

MORE DETAILS

At any rate, the beam of light emitted by your flashlight would appear to reach the far wall instantly, as the speed of light is independent of your speed and would always be constant at about 300,000 kilometres per second in a vacuum.

MORE DETAILS