That's the Andromeda galaxy, our closest galactic neighbor, and in 4 billion years, it will collide with the Milky Way, throwing our solar system ... of the differences between galaxies themselves.

In this feature, learn the difference ... Milky Way—The faint band of light stretching across the sky, due to myriad faint stars and nebulas; the name of the spiral galaxy containing our solar ...

However, it is now considered a dwarf planet instead. The universe has billions of galaxies, and our solar system is in the Milky Way Galaxy. The Milky Way contains at least 100 billion other ...

A solar mass is equivalent to the mass of the Sun. Hence, the Milky Way galaxy that Earth and our solar system ... between 150,000 and 200,000 light-years while the mass of Milky Way galaxy was ...