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  2. Atmospheric optics - Wikipedia

    en.wikipedia.org/wiki/Atmospheric_optics

    A rainbow is a narrow, multicoloured semicircular arc due to dispersion of white light by a multitude of drops of water, usually in the form of rain, when they are illuminated by sunlight. Hence, when conditions are right, a rainbow always appears in the section of sky directly opposite the Sun.

  3. Cloud iridescence - Wikipedia

    en.wikipedia.org/wiki/Cloud_iridescence

    Iridescent mid altitude clouds Iridescent polar stratospheric cloud at sunset over Aberdeen, Scotland Cloud iridescence, seen above the clouds covered with grey clouds, Pondicherry, India. Cloud iridescence or irisation is a colorful optical phenomenon that occurs in a cloud and appears in the general proximity of the Sun or Moon.

  4. Night sky - Wikipedia

    en.wikipedia.org/wiki/Night_sky

    Paranal Observatory nights. [3] The concept of noctcaelador tackles the aesthetic perception of the night sky. [4]Depending on local sky cloud cover, pollution, humidity, and light pollution levels, the stars visible to the unaided naked eye appear as hundreds, thousands or tens of thousands of white pinpoints of light in an otherwise near black sky together with some faint nebulae or clouds ...

  5. Aurora alert: Northern lights to glow over US Friday night - AOL

    www.aol.com/weather/friday-night-lights-aurora...

    The weekend will kick off with a rare celestial show as the northern lights illuminate the night sky over the northern United States. Over the past few days, the sun has launched massive clouds of ...

  6. Maps show best areas in U.S. to see northern lights - AOL

    www.aol.com/maps-show-best-areas-u-150216820.html

    The night sky in Wisconsin glows with the Northern Lights as a geomagnetic storm brings vibrant pink and green colors to a majority of the northern states. / Credit: Ross Harried/NurPhoto via ...

  7. A Northern Lights-looking Phenomenon Lit up the Sky ... - AOL

    www.aol.com/northern-lights-looking-phenomenon...

    However, this sighting in Palm Desert is rather rare as typically the clouds are only seen at “high latitudes — say, about 45 degrees N. or S. — from May through August in the Northern ...

  8. Circumzenithal arc - Wikipedia

    en.wikipedia.org/wiki/Circumzenithal_arc

    The circumzenithal arc, also called the circumzenith arc (CZA), the upside-down rainbow, and the Bravais arc, [1] is an optical phenomenon similar in appearance to a rainbow, but belonging to the family of halos arising from refraction of sunlight through ice crystals, generally in cirrus or cirrostratus clouds, rather than from raindrops.

  9. Incredible rainbow cloud spotted in China [Video] - AOL

    www.aol.com/lifestyle/incredible-rainbow-cloud...

    A stunning rainbow cloud lights up the sky in Southern China. Skip to main content. 24/7 Help. For premium support please call: 800-290-4726 more ways to reach us. Sign in ...