👉The Milky Way isn’t just a pretty spray of stars across the night sky — it’s a massive, living system that has been changing and growing for over 13 billion years. Our galaxy has a barred spiral shape, with a glowing central bulge, a bar of stars running through its middle, and wide spiral arms that curve outward. These arms are busy places where new stars are constantly forming. At the very center sits a supermassive black hole called Sagittarius A*. It has millions of times the mass of our S