The galaxy is only 100,000 light years across. It's been here for 14 billion years. If it's possible for a planetary civilization to go interstellar, even if th

The galaxy is only 100,000 light years across. It's been here for 14 billion years. If it's possible for a planetary civilization to go interstellar, even if they only spread at 0.1C, they would have colonized any place with useful resources thousands of times over.