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News for Norther Colorado and the world

Friday, October 24, 2014

‘Photo Essays’ Archives

Astronomy Picture of the Day

Astronomy Picture of the Day

NGC 281: The Pacman Nebula Credit & Copyright: Steve Cannistra (StarryWonders) Explanation: NGC 281 is a busy workshop of star formation. Prominent features include a small open cluster of stars, a diffuse red-glowing emission nebula, large lanes of obscuring gas and dust, and dense knots of dust and gas in which stars may still be forming. The open cluster of stars IC 1590 visible around the center has formed only in the last few million years. The brightest member ... Full Story

Astronomy Picture of the Day

Astronomy Picture of the Day

    The Heart and Soul Nebulas Credit: Digitized Sky Survey, ESA/ESO/NASA FITS Liberator;  Color Composite: Davide De Martin (Skyfactory) Explanation: Is the heart and soul of our Galaxy located in Cassiopeia? Possibly not, but that is where two bright emission nebulas nicknamed Heart and Soul can be found. The Heart Nebula, officially dubbed IC 1805 and visible in the above zoomable view on the right, has a shape reminiscent of a classical heart symbol. Both ... Full Story

Astronomy Picture of the Day

Astronomy Picture of the Day

Milky Way Over Switzerland Credit: Stephane Vetter (Nuits sacrees) Explanation: What's visible in the night sky during this time of year? To help illustrate the answer, a beautiful land, cloud, and skyscape was captured earlier this month over Neuchâtel, Switzerland. Visible in the foreground were the snow covered cliffs of the amphitheater shaped Creux du Van, as well as distant trees, and town-lit clouds. Visible in the night sky (at midnight) were galaxies including ... Full Story

Astronomy Picture of the Day

Astronomy Picture of the Day

Mammatus Clouds Over Olympic Valley Credit & License: Matt Saal (Wikipedia) Explanation: What's happened to these clouds? Normal cloud bottoms are flat because moist warm air that rises and cools will condense into water droplets at a very specific temperature, which usually corresponds to a very specific height. After water droplets form that air becomes an opaque cloud. Under some conditions, however, cloud pockets can develop that contain large droplets of ... Full Story

Astronomy Picture of the Day

Astronomy Picture of the Day

Visit the NASA/JPL website to view more Astronomy Pictures of the Day Spiral Galaxy NGC 2841 Close Up Credit: NASA, ESA, and the Hubble Heritage (STScI / AURA) - ESA / Hubble Collaboration Explanation: A mere 46 million light-years distant, spiral galaxy NGC 2841 can be found in the northern constellation of Ursa Major. This sharp view of the gorgeous island universe shows off a striking yellow nucleus and galactic disk. Dust lanes, small, pink star-forming regions, and ... Full Story

Astronomy Picture of the Day

Astronomy Picture of the Day

Visit the NASA/JPL website to view more Astronomy Pictures of the Day Planetary Nebula Project Credit & Copyright: J-P Metsävainio (Astro Anarchy) Explanation: Cast off by dying sunlike stars, planetary nebulae are a brief but glorious final phase of stellar evolution. The gaseous shrouds are ionized by an extremely hot central source, the shrinking core of a star running out of fuel for nuclear fusion. Shining in the cosmic night, their simple symmetries are ... Full Story

Astronomy Picture of the Day

Astronomy Picture of the Day

Visit the NASA/JPL website to view more Astronomy Pictures of the Day X-Class Flare Credit: NASA / Goddard / SDO AIA Team Explanation: On Valentine's Day (ET) the Sun unleased one of its most powerful explosions, an X-class flare. The blast was the largest so far in the new solar cycle. Erupting from active region AR1158 in the Sun's southern hemisphere,the flare is captured here in this extreme ultraviolet image from the Solar Dynamics Observatory (SDO). The intense burst ... Full Story

Astronomy Picture of the Day

Astronomy Picture of the Day

Visit the NASA/JPL website to view more Astronomy Pictures of the Day   The North America Nebula in Infrared Credit: NASA, JPL-Caltech, L. Rebull (SSC, Caltech);  DSS, D. De Martin Explanation: The North America Nebula can do what most North Americans cannot -- form stars. Precisely where in the nebula these stars are forming has been mostly obscured by some of the nebula's thick dust that is opaque to visible light. However, a new view of theNorth America Nebula ... Full Story

Astronomy Picture of the Day

Astronomy Picture of the Day

Visit the NASA/JPL website to view more Astronomy Pictures of the Day The Rosette Nebula Credit & Copyright: Brian Lula Explanation: Would the Rosette Nebula by any other name look as sweet? The bland New General Catalog designation of NGC 2237 doesn't appear to diminish the appearance of this flowery emission nebula. Inside the nebula lies an open cluster of bright young stars designated NGC 2244. These stars formed about four million years ago from the ... Full Story

Astronomy Picture of the Day

Astronomy Picture of the Day

Visit the NASA/JPL website to view more Astronomy Pictures of the Day Ice Fishing for Cosmic Neutrinos Credit: NSF / B. Gudbjartsson, IceCube Collaboration Explanation: Scientists are melting holes in the bottom of the world. In fact, almost 100 holes melted near the South Pole are now being used as astronomical observatories. Astronomers with the IceCube Neutrino Observatory lowered into each vertical lake a long string knotted with basketball-sized light detectors. The ... Full Story

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