"response to the inaccuracy of considering only general relativity, as in the traditional model of the Big Bang, alternative theoretical formulations for the beginning of the universe have been proposed, including a
string theory-based model in which two
branes, enormous membranes much larger than the universe, collided, creating mass and energy.
[3]" people can create two branes applying strings , people can collect strings and make branes, then branes will collide, after collision of branes matter will be created, from matter people can make physical objects like starships or spaceships.