Remix Nebula - cloud of dust, hydrogen, helium and other gases that attract matter and materials to clump. These so called clumps form stars, planets, and other planetary systems. Nebulae are where the stars are formed!
Andromeda Galaxy: nearest neighboring major galaxy to our "Milky Way Galaxy". Due to begin a collision with our Milky Way galaxy in about billion years, Andromeda is million light years away from Earth (at the speed of light).