The Milky Way or Milky Way Galaxy, or simply the Galaxy, is the galaxy that includes the Solar System, with the name describing the galaxy's appearance from Earth: a hazy band of light seen in the nig
The Galactic Center as seen from Earth's night sky (featuring the telescope's laser guide star).
The Milky Way as seen from a dark site with little light pollution
Photograph of the "Great Andromeda Nebula" from 1899, later identified as the Andromeda Galaxy
A diagram of the Sun's location in the Milky Way; the angles represent longitudes in the galactic coordinate system
The Andromeda Galaxy is a barred spiral galaxy and is the nearest major galaxy to the Milky Way. It was originally named the Andromeda Nebula and is cataloged as Messier 31, M31, and NGC 224. Andromed
Milky Way
…led to the finding of galactic rotation by Bertil Lindblad and Jan Oort. In 1917, Heber Doust Curtis had observed the nova S Andromedae within the Great Andromeda Nebula (Messier object 31). Searching the photographic record, he found 11 more novae. Curtis noticed that these novae were, on average, 10 magnitudes fainter…
The earliest known photograph of the Great Andromeda "Nebula" (with M110 to the upper right), by Isaac Roberts (29 December 1888)
Largest Mosaic of Andromeda by Hubble with details: (a) Clusters of bright blue stars embedded within the galaxy, background galaxies seen much farther away, and photo-bombing by a couple bright foreground stars that are actually inside our Milky Way; (b) NGC 206 the most conspicuous star cloud in Andromeda; (c) A young cluster of blue newborn stars; (d) The satellite galaxy M32, that may be the residual core of a galaxy that once collided with Andromeda; (e) Dark dust lanes across myriad stars.
Processed image of the Andromeda Galaxy, with enhancement of H-alpha to highlight its star-forming regions
Illustration showing both the size of each galaxy and the distance between the two galaxies, to scale