1. What happens if u dig straight through Earth to the other side? at which stage do you go upside down?

2. If stars and their planets are billions of years in the past when u look at them in the sky, if you travel to them with a spaceship, at what stage do u travel back in time, and what stage does the planet travel forwards in time to allow you to 'land' on it.

>What if you learned that everything you think you knew about space, was a lie?