In the video below, novelist and physicist Alastair Reynolds offers some thoughts on colonizing the galaxy. He notes that given the vast size of the galaxy it would take about 3.75 million years to colonize the entire galaxy. This is longer than humans have been in existence. But, it is actually not too long considering that the galaxy works on a scale of billions and billions of years.
In this talk, Reynolds asks us to think about the Fermi Paradox, which basically asks, “if there are aliens out there, where is everyone?” Why haven’t they shown up yet?
If you’d like to read more, take a look at these titles in our collection: