Starship Asterisk*

Towards the end of the animation you can see a beam of green light shooting upwards. I wonder what is it for. Is it a laser? Or just an artistic license?

One point that I have always wondered about Where does the Shuttle stands when it is upright on the pad? It seems clear that the orbiter "hangs" from the bipod and the tail suport on the External tank (flimsy as the look). The ET is not suported anywhere on its base, so it also "hangs...