Belt of Venus

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"Venus's girdle" redirects here. For the marine lifeform, see Ctenophora.

The Belt of Venus or Venus's Girdle is an atmospheric phenomenon seen at sunrise and sunset. Shortly after sunset or shortly before sunrise, the observer is, or is very nearly, surrounded by a pinkish glow (or anti-twilight arch) that extends roughly 10°–20° above the horizon. Often, the glow is separated from the horizon by a dark layer, the Earth's shadow or "dark segment." The arch's light pink color is due to backscattering of reddened light from the rising or setting Sun. A very similar effect can be seen during a total solar eclipse.

ALMA and Chajnantor at Twilight, lying between the two groups of antennas: the Earth's shadow and Belt of Venus phenomena.[1]


See also[edit]


  1. ^ "ALMA and Chajnantor at Twilight". ESO Picture of the Week. Retrieved 18 January 2014. 
  • Naylor, John (2002). Out of the blue : a 24-hour skywatcher's guide. Cambridge: Cambridge University Press. p. 72. ISBN 0-521-80925-8. 

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