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Posts Tagged ‘eclipse’

Eclipse Calculator: A New Application To Simulate Eclipses On Your Mobile, Developed At The UB

January 20, 2013 Leave a comment

Which future eclipses will be visible from my location? How will they be like? How long will they last? These are some of the questions answered by the new application Eclipse Calculator, designed for Android mobiles by the researcher from the UB Eduard Masana.

It is a new appealing tool for those who love astronomy; it is easy to use and it provides information about all solar and lunar eclipses or planetary transits from 1900 to 2100. The application, public and free, can be downloaded from the Google Play website (https://play.google.com/store). At first, it has been developed in Catalan, Spanish and English, but it is planned to translate it to other languages.

Full Story: http://www.ub.edu/web/ub/en/menu_eines/noticies/2013/01/041.html

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One Ring to Bring Them All: Eclipse Enchants Grand Canyon

June 13, 2012 Leave a comment

Ever see ringlets of sunlight playing in the shadows of a tree or a fiery ring of light in the sky? These incredible effects are the results of an annular solar eclipse like the one that occurred when the moon passed directly between the sun and Earth on Sunday, May 20, 2012. The event was viewable from Japan all the way across the Pacific Ocean to midway through the United States.
Because the moon travels on a slightly tilted orbit compared to the plane of Earth’s orbit around the sun, eclipses do not occur every time the moon comes between the sun and Earth. However, there are two points or “nodes” when the moon does pass through this plane. If either of these nodes coincides with a new moon (when the sun is illuminating only its far side), a solar eclipse will occur. If a node is reached during a full moon, Earth will block the sun’s light, casting a shadow onto the moon causing a lunar eclipse.
An annular eclipse occurs when the moon is too far away from us to completely cover the disk of the sun. This results in an annularity: the ring-shaped outline of the sun that can be seen surrounding the dark new moon. Because of the surreal look of the “ring of fire,” annular eclipses are some of the most impressive celestial events visible from Earth.
This eclipse passed over some of the U.S.’s most famous national parks with the full annularity visible from 33 parks, while an additional 125 parks witnessed a partial eclipse. The NASA Lunar Science Institute (NLSI) at NASA’s Ames Research Center, Moffett Field, Calif., and the National Parks Service took advantage of this rare event and joined forces to facilitate safe viewings for as many people as possible.

Full Story: http://www.nasa.gov/centers/ames/news/features/2012/annular-eclipse.html

Partial — and Annular — Eclipse of the Sun


People with clear skies across most of the U.S., Canada, and Mexico will experience a partial eclipse of the Sun late this Sunday afternoon (May 20, 2012). Only those near the Eastern Seaboard will miss out.

And, if you happen to be in a swath of land running from Northern California to Texas, you’ll also get a very special kind of partial eclipse: an annular eclipse, in which the rim of the Sun becomes a brilliant ring completely encircling the black silhouette of the Moon.

The Sun will be moving down the afternoon sky when a dark dent begins to intrude into one edge. The dent will deepen, eventually turning the Sun into a fat crescent — or, for western half of the continent, a thin crescent. The dent is the silhouette of the new Moon traveling along its monthly orbit around the Earth.

Most Westerners can see the entire eclipse from beginning to end before sunset. Farther east, sunset puts an end to the show while the eclipse is still in progress — affording weird and spectacular sunset scenes just above the west-northwest horizon. “This is going to be a great photo opportunity,” suggests Robert Naeye, editor in chief of Sky & Telescope magazine.

Full Story: http://www.skyandtelescope.com/about/pressreleases/Partial-151-and-Annular-151-Eclipse-of-the-Sun-to-Sweep-North-America-Sunday-May-20th-150977245.html

Watch the Dawn Eclipse of the Moon, Dec. 10, 2011

December 6, 2011 Leave a comment

Credit: Sky & Telescope photo by Richard Tresch Fienberg

Credit: Sky & Telescope photo by Richard Tresch Fienberg

If you’re anywhere in central or western North America, mark your calendar to get up before dawn this Saturday, December 10, 2011. That morning the full Moon goes through its last total eclipse until 2014.

The farther west you are in the U.S. or Canada, the better you’ll be set up for the show. If you’re in the Pacific time zone you can watch the Moon slip into Earth’s shadow completely, while the Moon is sinking low in the west-northwestern sky and dawn is brightening. In the Pacific Northwest and westernmost Canada, you can even see the Moon start to emerge from our planet’s shadow after the total eclipse is over — until moonset and sunrise end the show.

From roughly Arizona to the Dakotas, the Moon sets while it’s still totally eclipsed — though horizon obstructions and the brightening dawn may end your view somewhat before then.

Full Story: http://www.skyandtelescope.com/about/pressreleases/Watch-the-Dawn-Eclipse-of-the-Moon-Decnbsp10nbsp-2011-134917183.html

Moon’s Shadow, like a Ship, Creates Waves

October 2, 2011 Leave a comment

During a solar eclipse, the Moon’s passage overhead blocks out the majority of the Sun’s light and casts a wide swath of the Earth into darkness. The land under the Moon’s shadow receives less incoming energy than the surrounding regions, causing it to cool. In the early 1970s, researches proposed that this temperature difference could set off slow-moving waves in the upper atmosphere. They hypothesized that the waves, moving more slowly than the travelling temperature disparity from which they spawned, would pile up along the leading edge of the Moon’s path — like slow-moving waves breaking on a ship’s bow. The dynamic was shown theoretically and in early computer simulations, but it was not until a total solar eclipse on 22 July 2009 that researchers were able to observe the behavior.

Full Story: http://www.astronews.us/2011-09-30-1330.html