Question

What is inside our nearest galaxy Andromeda?

Answer 1

The Milky Way and Andromeda galaxies are expected to collide in ~4.5 billion years, merging to form a giant elliptical galaxy[14] or a large disc galaxy.[15] With an apparent magnitude of 3.4, the Andromeda Galaxy is among the brightest of the Messier objects - making it visible to the naked eye on moonless nights,[17] even when viewed from areas with moderate light pollution.