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The dust and gas in the Milky Way cause extinction at optical wavelengths, and foreground stars can be confused with background galaxies. However, the effect of extinction drops at longer wavelengths, such as the infrared , and the Milky Way is effectively transparent at radio wavelengths.
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The Milky Way [c] 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 night sky formed from stars that cannot be individually distinguished by the naked eye.
The Local Group — the galaxy group that includes our own Milky Way galaxy — appears to be moving at 620 ± 15 km/s in the direction of galactic longitude ℓ = 271.9° ± 2°, b = 30° ± 3°. [89] The dipole is now used to calibrate mapping studies.
Aquila, which lies in the Milky Way, contains many rich starfields and has been the location of many novae. [1] Animation fading-in of Aquila, Delphinus, Sagitta, and the summer Milky Way as seen in Dark-sky preserve Westhavelland
The observed X-ray background is thought to result from, at the "soft" end (below 0.3 keV), galactic X-ray emission, the "galactic" X-ray background, and, at the "hard" end (above 0.3keV), from a combination of many unresolved X-ray sources outside of the Milky Way, the "cosmic" X-ray background (CXB).
In the background are the southern Milky Way on the left and the Magellanic Clouds at the top. [1] The Magellanic Clouds (Magellanic system [2] [3] or Nubeculae Magellani [4]) are two irregular dwarf galaxies in the southern celestial hemisphere. Orbiting the Milky Way galaxy, these satellite galaxies are members of the Local Group.