I will never manage.
If someone else manages to accelerate something tangible to the speed of light it will be far in the future.
Nothing until he turns around and comes back to twin B.
When the light is traveling through vacuum.
Electrons are able to travel close to speed of light.
Massless particles traveling at the speed of light include photons, the particles of light. They have no rest mass and always move at the speed of light in a vacuum according to the theory of special relativity.
Heat waves traveling at the speed of light are called RADIATION! :)
Yes.
To an outside observer a person traveling at the speed of light would be frozen in time. To the person traveling at the speed of light, things would seem normal.
ANY light traveling through the same medium (stuff) has the same speed.
Speed. All photons traveling through a vacuum travel at the speed of light.
the same as you were if you weren't.
Traveling on a beam of light is not possible for objects with mass, as light moves at the fastest speed in the universe and cannot be caught up to. Traveling at the speed of light would also cause time dilation effects, where time would appear to stand still for the traveler.
The speed of light is slightly slower in air compared to a vacuum, but it is typically around 299,702 km/s when traveling through air at 30°C.