Says it right here:
> From studying the Nataral's artifacts and writings, they learn that the only way to break the crystal spheres is from the inside.
He just had to go to the other solar system to learn how to go to the other solar system.
> From studying the Nataral's artifacts and writings, they learn that the only way to break the crystal spheres is from the inside.
He just had to go to the other solar system to learn how to go to the other solar system.
They used their interstellar flight capabilities to go wait for someone in the universe to develop interstellar flight capabilities. Checks out.
I don't know if it was this book, but the 'suspended animation' was basically pushing several large stars and neutron stars close enough together that the flat space between them was inside an encompassing event horizon, and there they waited, living their lives at an extremely slow (compared to the outside universe) pace.