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Acum 1 zi · Andromeda has a D25isophotal diameterof about 46.56 kiloparsecs(152,000 light-years)[8]and is approximately 765 kpc (2.5 million light-years) from Earth. The galaxy's name stems from the area of Earth's sky in which it appears, the constellation of Andromeda, which itself is named after the princesswho was the wife of Perseusin Greek mythology.
Acum 3 ore · The NASA Cosmic Background Explorer ( COBE) satellite orbited Earth in 1989–1996 detected and quantified the large scale anisotropies at the limit of its detection capabilities. The NASA COBE mission clearly confirmed the primary anisotropy with the Differential Microwave Radiometer instrument, publishing their findings in 1992.
