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It takes all the colors of the rainbow for us to see it that way. It happens because of something called the Rayleigh effect, or Rayleigh scattering, named after a British scientist who first ...
Fluorescence, also called luminescence or photoluminescence; Mie scattering (Why clouds are white) Metamerism as of alexandrite; Moiré pattern; Newton's rings; Phosphorescence; Pleochroism gems or crystals, which seem "many-colored" Rayleigh scattering (Why the sky is blue, sunsets are red, and associated phenomena) Reflection; Refraction ...
The Milky Way is brighter in the Southern Hemisphere than in the North. (Photo taken at La Silla Observatory) [2]. The fact that the sky is not completely dark at night, even in the absence of moonlight and city lights, can be easily observed, since if the sky were absolutely dark, one would not be able to see the silhouette of an object against the sky.
The spectrum does not contain all the colors that the human visual system can distinguish. Unsaturated colors such as pink, or purple variations like magenta, for example, are absent because they can only be made from a mix of multiple wavelengths. Colors containing only one wavelength are also called pure colors or spectral colors. [8] [9]
Starting June 3, Mercury, Mars, Jupiter, Saturn, Uranus and Neptune will dazzle the sky as they near each other in the solar system, giving stargazers something special to look at in the morning.
Viewers in most of the continental United States, eastern Canada, and parts of Africa and Mexico can look for a celestial triangle in the sky when evening twilight ends at 6:11 p.m. ET. Mars will ...
For most people, these are likely to be the best observing conditions within their reach. Under such "typical" dark sky conditions, the naked eye can see stars with an apparent magnitude up to +6 m. Under perfect dark sky conditions where all light pollution is absent, stars as faint as +8 m might be visible. [4]
Get ready for a parade of planets this winter. During the month of January, sky gazers will be able to see four planets in one view — and come February, the parade will only expand.