Why the size of shuttle will decrease when it gains reaches the speed of light?

Question

Why the size of shuttle will decrease when it gains reaches the speed of light?

Answer 1

Probably because the acceleration forces generated by engines powerful enough to ramp it up to lightspeed will exceed the structural strength of the materials used in the construction of the shuttle & the motors will drive through the back of it & come out the front mincing everything in their path.

Answer 2

The Shuttle that reaches the speed of light will turn into a piece of dust.

Answer 3

The shuttle was not designed to even approach the speed of light. That being said, any object that approaches the speed of light relative to a given reference frame will decrease in length in the direction of travel as measured in that reference frame. The length of the object in its own reference frame will not change.

So in other words, if you pass me at close to the speed of light, I will see that your length has been shortened. You, on the other hand, will not see that at all. In fact, if you look at me as you pass, you will see that my length has been shortened by the same amount.  There is no "master" reference frame to determine the accuracy of measurements made of objects that are moving relative to each other.

ADDED: These are not illusions - the length actually does change when measured in a different reference frame. So does time. That's how relativity works.