The Sun is dying. Helium will soon permeate its core, triggering a violent explosion, and its burning-hot diameter will increase until it has consumed everything that stands in its way.

As long as we remain in its path, humanity stands no chance.

Interstellar emigration is the only way out. Reaching a consensus on a destination has been easy: the only viable target is Proxima Centauri. It is the star closest to our own, a mere 4.3 light-years away.

How to reach our new solar system is more difficult. Spaceships stand no chance in open space, and the nearest inhabitable planet lies hundreds of thousands of years away. If humanity leaves Earth behind, our continued existence is impossible. The only way to survive is to find a way to propel Earth out of its orbit. But how?