I'm thinking..get squashed by the pressure in space
1. You wouldn't have any electric 2. Nothing would happen as there is no air in space.
it will not stop forever
As the medium through which light propagates in space is closes to a vacuum, light propagates very well in space. However, it travels at the same speed as it would on earth, as light travels at 299,792,458m/s in a vacuum, regardless of where that vacuum is located. the light travels in same speed whether it travels in space or earth.
Light waves do not require a medium through which to travel. They will travel (propagate) perfectly well in a vacuum. Otherwise, light would not pass through the vacuum of space. It would be very dark here on earth as the light from the sun, moon and stars could not reach Earth through the vacuum of space.
Correct, electromagnetic waves can travel through a vacuum. Sunlight is an example of this.
1. You wouldn't have any electric 2. Nothing would happen as there is no air in space.
Due to the vacuum of space, nothing. The air would be dispersed and have no effect on anything in space
Space is a vacuum. All of your insides would get sucked out of every hole in your body. Every hole.
it would become pickled
A vacuum is a volume with no air particles in it at all. The biggest exemple of a vacuum would be space
No "space" is mostly a vacuum. No sound is transmitted in a vacuum. You would not hear a starship exploding either!
It will explode
Not well. It would be entirely dessicated.
Cathode rays in a vacuum would travel until stopped (or deflected by an electromagnetic field).
They would get marshmallow in their hair. The marshmallow is too small and has too little weight to do any damage. It would reach terminal velocity (the speed at which it doesn't fall any faster) fairly quickly, and that low speed, combined with the squishy nature of the marshmallow would keep it from doing any damage. Also, due to the shape of the building, and the winds in the area the marshmallow would likely not even make it to the ground, but get caught on one of the lower levels of the building and make a nice pigeon snack.
I believe what you are describing is a vacuum, in which there is a space with absolutely no matter. In this situation, assuming the walls are strong enough to withstand the enormous amounts of pressure, it would simply be empty space.
it will not stop forever