- #1
Jupiter60
- 79
- 22
According to this website, it might be possible, by blasting off layers and leaving the rocky cores, turning them into rocky planets like the Earth, instead of the gas planets that they are now.
http://terraforming.wikia.com/wiki/Uranus
http://terraforming.wikia.com/wiki/Neptune
http://terraforming.wikia.com/wiki/Uranus
http://terraforming.wikia.com/wiki/Neptune