"

 Change to Andromeda 

I changed Andromeda Galaxy to Andromeada ""nebulae"" for two reasons:

Before it was discoverd to be a galaxy it was thought to be a nebulae
Ed Hubble discoved that it was a galaxy.  By saying that ""he claimed to discover Andromeda galaxy first"" is like saying that ""he claimed that he discovred to discover that it was a galaxy before Hubble"".  How could he argue his discover with Hubble when they live 300 years apart?"