Features: • The Universe of Galaxies – See how we’ve come to learn so much about our home galaxy and other galaxies. • Relativity – Black holes are being used to test the rules of Einstein’s theory of relativity, but could they break the rules as well? • Dark Matter on Earth – Could geological questions be solved with dark matter? A look into some theories that may shed some light. • And more! As a space and astronomy enthusiast, you’ll appreciate all the detailed stories and information this special issue offers.