Do you age when traveling at the speed of light?

We do not age slower if we go at the speed of light but the time stops when we go at the speed of light. The reality is a object having a definite mass cannot achieve speed of light because mass is dependent on speed and when the object reaches near the speed of light we need infinite force to keep it accelerating.

How long would it take humans to travel a light year?

about 37,200 human years
Saying we were a space shuttle that travelled five miles per second, given that the speed of light travels at 186,282 miles per second, it would take about 37,200 human years to travel one light year.

Can we travel to Alpha Centauri?

Alpha Centauri is 4.4 light-years away, or nearly 40 trillion kilometers. To get there in anywhere close to a human lifetime, spacecraft will need to travel a substantial fraction of light-speed—10\% would get a craft to Alpha Centauri in 44 years.

Is it possible to travel at the speed of light?

Yes, I agree with David. If somehow, you were able to travel at the speed of light, it would seem that ‘your time’ would not have progressed in comparison to your reference time once you returned to ‘normal’ speeds. This can be modeled by the Lorentz time dilation equation:

How long does it take for light to reach zero?

For light it seems that zero time has passed but for us it is still 8 minutes. This might seem like a paradox, but time is relative in Einstein’s theory of relativiy. Note that your argumentation is backwards, “time reaches zero for light, because everything is at the same place”.

Why does time freeze at the speed of light?

The reason some people will say that time freezes at the speed of light is that it’s possible to take two points on any path going through spacetime at less than the speed of light and calculate the amount of time that a particle would experience as it travels between those points along that path.

Does time slow down when it reaches the speed of light?

For a person travelling very close to the speed of light with velocity $v$ from the sun towards the earth time does slows down, and he goes past the earth in a matter of seconds.