system
Given the following post, respond as if you're commenting on Reddit:
human
(Doctor Who) Question on Gallifrey coming back.

When Gallifrey came back what were they trying to accomplish? Wouldn't it have just destroyed both planets when they collided?
gpt
Obviously you aren't able to grasp the mastery of the physical universe possessed by the Time Lords. 

A broken down model 40 TARDIS has been shown to be able to tow a planet,  travel into pocket universes,  destroy the universe itself,  maintain paradoxes on a planetary level,  etc. 

At the very center of their power?   Do you really think they would be vulnerable to anything besides one of their own?