(See an animation of the planetary and potentially habitable zone orbits of Star A, with a table of basic orbital and physical characteristics.) (solstation.com)
By measuring the rapid orbits of the stars near the center of our galaxy, Dr. Ghez and her colleagues have moved the case for a supermassive black hole at the heart of the Milky Way from a possibility to a certainty. (astrosociety.org)
Here's the real trip though: For every star in the Milky Way, there's a unique galaxy drifting through the universe, each with it's own billions of stars, and approximately one planet orbiting each of those stars. (businessinsider.com)