...If built:

All of this brings to mind a terrible movie, a movie that's almost as bad as The Tree of Life, Melancolia. I can forgive Hollywood for bad science, but not art house films. Cinema is not a joke; it's a real art and is concerned with the real world. In the real world (the subject of cinema), an object that's as big as the one in Melancolia could not escape or beat or evade our calculations, which can even detect and predict the movements of an object the size of a bus. Also, you do not need a whole big world to destroy this little world or ours. The astroid that did in the dinosaurs was only 2.5 to 3.7 miles across. Melancolia is to astrophysics what The Tree of Life is to evolutionary biology. Indeed, TOL even failed to improve upon the story of life that's depicted in Fantasia.

Fantasia was made in 1939! We deserve better from cinema.