In Star Age 1105, humans have discovered the laws of the universe.
It turns out that the magnificent universe is just like microscopic cells. Each space in the universe is connected by something like a cytoskeleton. The so-called space is nothing but the structure of the world, and changes in time and space are actually changes in the spatial configuration of the world. If you want to travel through time and space, you must send out enough power to change the spatial configuration of the world, so as to achieve the spatial state you want at that moment. But the power to change the world cannot be generated by human beings with their own technological power. They can only use the energy generated when galaxies and other explosions collide. However, the energy generated by the collision of two galaxies with the same mass as the Milky Way can only allow humans to return to the time and space of one or two years ago...
Author: The astronomical content in this article is for reference only. If there are any inaccuracies, you are welcome to point out corrections. All world views are private.
Purpose: cherish the present moment