Abstract: Nearly 25% of the universe is composed of a mysterious substance known as dark matter (while 70% of the cosmos is something called “dark energy”) making it the height of hubris to think that we know all there is to know about physics and astronomy today. This talk will review the strong evidence behind the existence of dark matter, such as gravitational lensing, then discuss how it might lead to naturally occurring anomalies not involving craft piloted by intelligent beings at all. Next, I will cover the possibility for its use as fuel for interstellar flight, one that can be gathered in transit, given its natural abundance being 5x that of interstellar hydrogen.