Andromeda Galaxy Andromeda Galaxy The Andromeda Galaxy (), also known as Messier 31, M31, or NGC 224, is a spiral galaxy approximately 780 kiloparsecs (2.5 million light-years) from Earth, and the nearest major galaxy to the Milky Way. Its name stems from the area of the sky in which it appears, the constellation of Andromeda. The 2006 observations by the Spitzer Space Telescope revealed that the Andromeda Galaxy contains approximately one trillion stars, more than twice the number of the Milky Way's estimated 200 to 400 billion stars. The Andromeda Galaxy's mass is estimated to be around 1.76 times that of the
The Hitchhiker's Guide to the Galaxy on making the alien a roving researcher for a "wholly remarkable book" named "The Hitchhiker's Guide to the Galaxy". As the first radio episode's writing progressed, the "Guide" became the centre of his story, and he decided to focus the series on it, with the destruction of Earth being the only hold-over. Adams claimed that the title came from a 1971 incident while he was hitchhiking around Europe as a young man with a copy of the "Hitch-hiker's Guide to Europe" book: while lying drunk in a field near Innsbruck with a copy of the book and looking up at