Asteroid Database and Mining Rankings
Although there are vast areas of emptiness in outer space, there are also alot of bodies of various sizes floating around out there. These objects range from the size of cosmic dust particles, to comets that are miles across like 67P/Churyumov-Gerasimenko, to asteroids the size of small planetoids.
If we were smart, the human race would be pouring significant amounts of money into tracking objects that could have catastrophic collisions with Earth.
Unfortunately, humanity is full of stupid, shortsighted people who would rather spend resources on fighting and killing each other. Hopefully we can evolve & come to our senses before this threat is actualized.