The Andromeda Galaxy is the closest large galaxy to our Milky Way and one of the most fascinating objects in the night sky. Located about 2.5 million light-years away from Earth, Andromeda is so massive that it contains nearly one trillion stars — far more than our own galaxy. On clear dark nights, it can even be seen with the naked eye as a faint glowing patch in the sky. Scientists have discovered that Andromeda and the Milky Way are slowly moving toward each other at incredible speed. Althoug