Earth is located in which galaxy?

The story behind the answer

Earth is in the Milky Way Galaxy, a barred spiral galaxy about 100,000 light-years across. Our Sun orbits its center in the Orion Arm, roughly 27,000 light-years from a supermassive black hole called Sagittarius A*. The other choices aren’t galaxies: a black hole is an object, “Galaxy Note” is a phone, and there’s no “Mars Galaxy.”

Remember it by picturing the faint, milky band you can see across a dark sky—that’s our galaxy edge-on.