Answer:
The universe is comprised of more than 75% of materials that are not visible and are often considered to be the dark matter. These are the baryonic matter that is formed due to the accumulation of protons, neutrons as well as electrons. They can be baryonic or non-baryonic type of matter. These dark matters are the substance that interconnects mostly by gravity along with some visible matter such as the stars and planets. These matters do not reflect light and they attract other matters, forming the major mass of the entire universe.
Brussels is the capital of Belgium, and Belgium is a country in North-Western continental Europe (only "north" if you don't take into account the Scandinavian Peninsula). It's located between Germany and France.
Within Belgium, Brussels is located in the middle of the country.
I believe we probably could if we use a cleaner source of energy such as solar power. It's renewable and almost unlimited.
Hope this helps you! :D