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Keyword: californianebula

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  • Astronomy Picture of the Day -- Dark Nebulas across Taurus

    03/14/2016 12:38:08 AM PDT · by SunkenCiv · 7 replies
    NASA ^ | Monday, March 14, 2016 | (see photo credit)
    Explanation: Sometimes even the dark dust of interstellar space has a serene beauty. One such place occurs toward the constellation of Taurus. The filaments featured here can be found on the sky between the Pleiades star cluster and the California Nebula. This dust is not known not for its bright glow but for its absorption and opaqueness. Several bright stars are visible with their blue light seen reflecting off the brown dust. Other stars appear unusually red as their light barely peaks through a column of dark dust, with red the color that remains after the blue is scattered away....
  • Astronomy Picture of the Day -- The California Nebula

    01/11/2016 11:57:19 PM PST · by SunkenCiv · 27 replies
    NASA ^ | January 12, 2016 | (see photo credit)
    Explanation: What's California doing in space? Drifting through the Orion Arm of the spiral Milky Way Galaxy, this cosmic cloud by chance echoes the outline of California on the west coast of the United States. Our own Sun also lies within the Milky Way's Orion Arm, only about 1,500 light-years from the California Nebula. Also known as NGC 1499, the classic emission nebula is around 100 light-years long. On the featured image, the most prominent glow of the California Nebula is the red light characteristic of hydrogen atoms recombining with long lost electrons, stripped away (ionized) by energetic starlight. The...
  • Astronomy Picture of the Day -- Zodiacal Light before Dawn

    09/13/2014 12:36:34 PM PDT · by SunkenCiv · 7 replies
    NASA ^ | September 11, 2014 | (see photo credit)
    Explanation: You might not guess it, but sunrise was still hours away when this nightscape was taken, a view along the eastern horizon from a remote location in Chile's Atacama desert. Stretching high into the otherwise dark, starry sky the unusually bright conical glow is sunlight though, scattered by dust along the solar system's ecliptic plane . Known as Zodiacal light, the apparition is also nicknamed the "false dawn". Near center, bright star Aldebaran and the Pleiades star cluster seem immersed in the Zodiacal light, with Orion toward the right edge of the frame. Reddish emission from NGC 1499, the...
  • Astronomy Picture of the Day -- The Gegenschein Over Chile

    01/14/2014 4:49:49 PM PST · by SunkenCiv · 9 replies
    NASA ^ | January 14, 2014 | (see photo credit)
    Explanation: Is the night sky darkest in the direction opposite the Sun? No. In fact, a rarely discernable faint glow known as the gegenschein (German for "counter glow") can be seen 180 degrees around from the Sun in an extremely dark sky. The gegenschein is sunlight back-scattered off small interplanetary dust particles. These dust particles are millimeter sized splinters from asteroids and orbit in the ecliptic plane of the planets. Pictured above from last year is one of the more spectacular pictures of the gegenschein yet taken. Here a deep exposure of an extremely dark sky over Las Campanas Observatory...