... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... Risks Comparable to NEOs . ... The Increasing Rate of Discovery of Asteroids . ... Comet and Asteroid Collision Probabilities . ... Extreme albedo comets and the impact hazard (PDF Format) . ... Asteroid Impact Animations . ... Workshop on Scientific Requirements for Mitigation of Hazardous Comets and Asteroids - 2002 . ... The Spaceguard Survey Report, 1992 (PDF) . Tsunami from Asteroid/Comet Impacts . ...

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... 2015 October 3 . A Blue Blood Moon . ... Explanation: This sharp telescopic snapshot caught late September's Harvest Moon completely immersed in Earth's dark umbral shadow , at the beginning of a total lunar eclipse. ... A dark apparition of the Full Moon near perigee , this total eclipse's color was a deep blood red, the lunar surface reflecting light within Earth's shadow filtered through the lower atmosphere. ... About APOD | ... NASA Official: Phillip Newman Specific rights apply . ...

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• APOD: 2015 April 8 - Full Moon in Earth's Shadow
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... Full Moon in Earth's Shadow . ... 7.04.2015 . ... Credit Copyright: Rolf Olsen Explanation: Last week the Full Moon was completely immersed in Earth's dark umbral shadow , just briefly though. The total phase of the April 4, 2015 lunar eclipse lasted less than 5 minutes, the shortest total lunar eclipse of the century . ... The reddened light within the shadow that reaches the lunar surface is filtered through the lower atmosphere. ... April . ... Publications with keywords: total lunar eclipse . ...

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... In a lunar eclipse, if the width of the shadow of the Earth is twice the width of the Moon, then the width of the Earth itself is (very nearly) three times that of the Moon--not twice, as one might perhaps think. ... This makes the shadow of the Earth not a cylinder, stretching to infinity without narrowing down, but a cone, with an angle of 0.5? across its apex C ( drawing ). ... We add to the drawing points H and K so that HA = KD = x . ...

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• The Exploration of the Earth's Magnetosphere"
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... On the morning of Thursday, 26 February, amid the Gal pagos Islands, the Sun will fade from view. Not the culmination of ancient prophecy, but none less mystical, Earth's small Moon will be executing a slow slide past the enormous Sun. ... And anyone living in southern North America, Central America, northern South America, or on islands and cruise ships in the Caribbean Sea will, weather permitting, have the opportunity to experience the wonder of a solar eclipse. ...

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... Bad Astronomy . ... This first Snack of the year 2000 (yes, I am one of those who says the Millennium begins in 2001) will talk a little about a wonderful event: a total lunar eclipse. On the evening of Thursday, January 20 (or the early morning Friday, January 21 if you lives east of England) the Moon will go undergo one of the best eclipses it can. ... The Moon stays in the Earth's shadow in a lunar eclipse longer the Earth stays in the Moon's shadow during a solar eclipse. ... 2008 Phil Plait. ...

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Astronotes Armagh Planetarium's Stellar Blog! ... Solar System . Sun . ... March . ... The extent of the solar eclipse of 3 November?а 2013 at 13:22 UTC as seen from Accra, Ghana. We will see a similar sight.?а (Image credit: Kwabena under Creative Commons Licence) . ... Your viewing location is not important as long as it offers an unobstructed view of the south eastern sky.. ... You can use ?eclipse glasses? to view the Sun, these are made from aluminized Mylar filter material. ...

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... In particular, members of the project regularly organize events dedicated to various interesting astronomical phenomena and events - solar and lunar eclipses, transit of Venus, etc. A total lunar eclipse will occur on April 15th, 2014, the first in two and half years. ... GLORIA will travel to Peru to broadcast the event live. ... Lunar eclipse . Lunar eclipses occur when the Moon passes into the Earth's shadow. ... A partial eclipse will be visible from the Canary Islands. The broadcast . ...

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... 2000 July 1 . Ultraviolet Earth from the Moon . ... Far UV Camera , Apollo 16 , NASA . Explanation: Here's a switch: the above picture is of the Earth taken from a lunar observatory! This false color picture shows how the Earth glows in ultraviolet (UV) light. UV light is so blue humans can't see it. ... The part of the Earth facing the Sun reflects much UV light, but perhaps more interesting is the side facing away from the Sun. ... Tomorrow's picture: July GRB . ... About APOD | ...

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• APOD: 2000 October 28 - Moonrise, Planet Earth
• Educator's Guide to Eclipses
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Map projected image of Earth (AVHRR) 123k gif ; 1440k gif . Famous Apollo 11 image of Africa Europe 31k jpg . global composite of satellite images 508k gif . ... Galileo image of South America from 1st flyby 62k jpg . ... Earth by Meteosat 4 satellite (IR filter) 688k jpg . ... Ross ice sheet, Antarctica, taken by Galileo on its first pass of Earth 11k jpg . ... NOAA satellite's view of USA 322k gif . ... images of Earth from Clementine html . Earth images from weather satellites html . ...

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• The Sun
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Observation Strategies . For broad band filters the sky background will limit the detection of faint targets. ... See Table 6.3 on page 113 for sky level as function of ecliptic coordinates.) If these higher sky levels would severely impact the science data, observers should consider specifying the special requirement LOW-SKY on the Phase II proposal. ... Scattering of bright Earth light in the OTA can produce non-uniformities in the background which may hamper analysis of faint target images. ...

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... Tonight's Sky . ... Observing . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . ... How do light pollution filters work? Do they actually help? ... Light pollution reduction (LPR) filters work because many outdoor lighting sources do not shine evenly across the visible spectrum. ... Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

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• Asteroid will disintegrate in Earth's atmosphere Monday | Astronomy.com

... 8, ``Celestial Mechanics'', 2002 Earth penumbra effects on AES motion taking into account the refraction and the extinction of the light in the atmosphere A. M. Fominov Institute of Applied Astronomy, St. Petersburg, Russia The perturbing acceleration F of the Artificial Earth Satellite (AES) due to the solar ... In step 1, the table of the shadow function values with the angle distances d between the solar disk and the earth disk edge may be calculated. ...

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• http://www.ipa.nw.ru/conference/2002/sovet/PS/LUKASHEV.PS
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Phases of the Moon Phases of the Moon are not caused by the Earth's shadow. They are due to a change in our viewing perspective as the Moon orbits around us as it is lit by the Sun. ... The Earth spins in the light, so that the entire Earth gets to be lit at some point each day. Even though the Moon is always half-lit like the Earth is, sometimes we on the Earth see only a tiny bit lit, other times completely lit, depending on where the Moon is in its orbit around the Earth. ... Look at Day 7. ...

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... Обзор LPR фильтра. Впечатления от наблюдений с LPR фильтром. ... Характеристики цветных фильтров Baader-Planetarium . Мой перевод pdf- файла о фильтрах с сайта Baader-Planetarium (379 кб) . ...

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... The storm began quite unexpectedly. The strongest geomagnetic storm for the last seven months began on Earth almost precisely at the same time as the solar eclipse reached its maximal stage, the culmination of which occurred at GMT 02:35 (06:35 Moscow time). ... Oscillations of such amplitude in the magnetic field have not been observed since October, 11th of last year, which is more than seven months ago. ... We can only add that the magnetic storm lasted approximately 9 hours. ...

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Russian SHAREABLE DATA CENTER Institute of Solar-Terrestial Physics SB RAS . ... November 9, 10, 11, 12 and 13 . December 6, 7, 8 and 9 March 24, 25, 26, 27 and 28 . ... December 3, 4 and 5 February 13, 14 and 15 . ... December 10, 11, 12, 13 and 14 . Incoherent Scatter Radar ionospheric parameters measurements are carried out on coordinated days determined by the International Geophysical Calendar. ...

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... Solar Eclipses in 2009 : . There are two eclipses of the Sun (an annular eclipse on January 26 and a total eclipse on July 21-22 ) in 2009. ... Annular Solar Eclipse . ... Annular Eclipse of the Sun on January 26, 2009 . ... Beginning of northern limit of umbra . ... Beginning of center line; central eclipse begins . ... Central eclipse at local apparent noon . ... Total solar eclipse . ... An annular eclipse occurs when the apparent disk of the Moon is smaller than that of the Sun. ... Umbra: . ...

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... In The Light of Truth" The Grail Message by Abd-ru-shin is a classic work that offers clear and perceptive answers to questions which challenge every human being. ... It answers eternal questions such as what does it mean to be human, what is the purpose of life on Earth, and what happens to "me" when I die. ... In the Light of Truth" The Grail Message is directed solely to the individual human being, irrespective of creed, nationality or race. ...

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• Earthshine: the Moon shining in reflected light from the Earth
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