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  2. Atmospheric optics - Wikipedia

    en.wikipedia.org/wiki/Atmospheric_optics

    This process of reflection/absorption is what causes the range of cloud color from white to black. [19] Other colors occur naturally in clouds. Bluish-grey is the result of light scattering within the cloud. In the visible spectrum, blue and green are at the short end of light's visible wavelengths, while red and yellow are at the long end. [20]

  3. Why the sky turned purple during Hurricane Milton - AOL

    www.aol.com/weather/why-sky-turned-purple-during...

    People have reported purple skies in the aftermath of several different hurricanes -- from the Category 1 Hurricane Florence, a large, slow-moving hurricane during 2018, to Hurricane Michael, the ...

  4. Green, red and purple: The colorful science behind the ...

    www.aol.com/weather/green-red-purple-colorful...

    Red is also created by oxygen but in the highest part of the atmosphere at more than 150 miles above the Earth's surface. Purple and blue are related to nitrogen, with purple lights appearing ...

  5. Afterglow - Wikipedia

    en.wikipedia.org/wiki/Afterglow

    In the case of alpenglow, which is similar to the Belt of Venus, [7] afterglow is used in general for the golden-red glowing light from the sunset and sunrise reflected in the sky, and in particularly for its last stage, when the purple light is reflected. [2] [1] The opposite of an afterglow is a foreglow, which occurs before sunrise ...

  6. Sky - Wikipedia

    en.wikipedia.org/wiki/Sky

    An observer on the surface of the Earth can see a small part of the sky, which resembles a dome (sometimes called the sky bowl) appearing flatter during the day than at night. [1] In some cases, such as in discussing the weather, the sky refers to only the lower, denser layers of the atmosphere.

  7. Atmospheric circulation - Wikipedia

    en.wikipedia.org/wiki/Atmospheric_circulation

    Idealised depiction (at equinox) of large-scale atmospheric circulation on Earth Long-term mean precipitation by month. Atmospheric circulation is the large-scale movement of air and together with ocean circulation is the means by which thermal energy is redistributed on the surface of the Earth. The Earth's atmospheric circulation varies from ...

  8. These magnificent purple and green lights aren’t auroras ...

    www.aol.com/magnificent-purple-green-lights-aren...

    Such is the case for the sweeping purple and green lights that can hover over the horizon in the Northern Hemisphere. The phenomenon looks like an aurora but is in fact something entirely ...

  9. Airglow - Wikipedia

    en.wikipedia.org/wiki/Airglow

    Airglow over Auvergne, France Yellow, green and red bands of airglow along Earth's limb as seen from space. Airglow (also called nightglow ) is a faint emission of light by a planetary atmosphere . In the case of Earth's atmosphere , this optical phenomenon causes the night sky never to be completely dark, even after the effects of starlight ...