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The California Nebula (Also known NGC 1499 or Sh2-220) is an emission nebula located in the constellation Perseus. Its name comes from its resemblance to the outline of the US State of California in long exposure photographs. It is almost 2.5° long on the sky and, because of its very low surface brightness, it
Circumhorizontal Arc over peak 12225 in the Sierra Mountains of California A circumhorizontal arc is an optical phenomenon that belongs to the family of ice halos formed by the refraction of sunlight or moonlight in plate-shaped ice crystals suspended in the atmosphere, typically in actual cirrus or cirrostratus clouds.
Its appearance as a vertical line is an optical illusion, resulting from the collective reflection off the ice crystals; but only those that are in the common vertical plane, direct the light rays towards the observer (See drawing). This is similar to viewing a light source on a body of water.
The flaming bits of wreckage created a “spectacular light show in the sky," McDowell said. He estimated the debris was about 40 miles high, going thousands of miles per hour.
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Once the sun rises in the East the angle acts in a similar fashion until the sun begins to move across the sky. As the sun moves across the sky the angle is both zero and high along the line defined by the sun, the zenith, and the anti-sun. It is lower South of this line and higher North of this line.
Sacramento residents recently began reporting sightings of a mysterious purple light in the skies above California’s capital city. It’s not a space portal and it’s no UFO. It’s the new ...