How Civilizations Can Spread Across a Galaxy

New submitter kanweg writes: If you look at the Milky Way at night, it appears not much is changing. But over time, stars get closer and further to each other. Coryn Bailer-Jones, an astrophysicist at Germany's Max Planck Institute for Astronomy in Heidelberg, found that of 14 stars coming within three light-years of Earth, the closest encounter is likely to be HIP 85605, which now lies some 16 light years away in the constellation of Hercules. It will get a close as the Oort cloud.

This could be a (very long-term) method for human or alien civilizations to practice star hopping. Why travel 16 light-years through space when you can just wait until a star with a suitable planet gets close enough that you only have to cover the last stretch with an artificial spaceship? Take your time for a thoughtful response; it will take another 250,000 to 470,000 year before the close encounter.

Comments

cross space by cooperation!

[anwyn]

Have a good reputation by practicing ahinsa, and always helping and not hurting the civilizations one visits. Send a copy of your self to other civilizations and get them to build it, giving them detailed instructions. (Use error correcting codes for the instructions.) In return perform same service for others with good reputations! Using this method one can cross space at the speed of light or better. You can cross space at the speed a message can travel.

If you hurt anyone your reputation will be damaged and with it the ability to travel.