3 ms·

Hmm... You're just getting me thinking now: if we get sophisticated enough to travel hundreds/thousands of light years, etc... Then wouldn't it also stand to re

• tmuir 11y ago
  That's a far more difficult prediction: what technology will be developed in the next several hundred years. What sticks out as some problems with building a planet are where do you get all of the material, and how would you manage its rotational and revolutional speeds as it grew larger? Propelling a space ship seems fairly simple compared with propelling a planet. Douglas Adams had some things to say about designing planets.