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    81. Abstract
    ... For younger structures within streams, notably the dust trails that cause sharp meteor outbursts, it is the cometary ejection model (meteoroid production rate as a function of time through the several months of the comet's perihelion return, and velocity ...
    [ Сохраненная копия ]  Ссылки http://star.arm.ac.uk/~dja/papers/abs08EMP.html -- 2.5 Кб -- 18.04.2008
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    82. http://star.arm.ac.uk/~ambn/abstract240.html
    ... Two different compositions for the detached shell were used: oxygen-rich and carbon-rich dust grains. ...
    [ Сохраненная копия ]  Ссылки http://star.arm.ac.uk/~ambn/abstract240.html -- 2.1 Кб -- 04.12.1996
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    83. Leonid Press Release
    ... the Earth's atmosphere of small dust particles ejected from the parent comet, Tempel ... of the cometary orbit (162 degrees), the dust grains collide almost head-on with the ...
    [ Сохраненная копия ]  Ссылки http://star.arm.ac.uk/leonid/leopress.html -- 9.3 Кб -- 05.10.1999
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    84. Armagh Observatory
    ... In the case of the Perseids, the Earth encounters this dust at high speed тАФ over 200,000 kilometres per hour тАФ and this causes the small dust grains, with sizes ranging from typically a few millimetres up to a centimetre or more, to vaporize in the ...
    [ Сохраненная копия ]  Ссылки http://star.arm.ac.uk/press/2013/Perseids2013_pr.html -- 7.7 Кб -- 02.08.2013
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    85. Armagh Observatory
    ... In the case of the Perseids, the Earth encounters this dust at high speed over 200,000 kilometres per hour and this causes the small dust grains, with sizes ranging from typically a few millimetres up to a centimetre or more, to vaporize in the EarthтАЩs ...
    [ Сохраненная копия ]  Ссылки http://star.arm.ac.uk/press/2012/Perseids2012_pr.html -- 7.6 Кб -- 07.08.2012
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    86. INTRODUCTION
    ... The fades are caused by enormous clouds of dust which cover a large part of the star ... The dust is thought to be made of small particles of carbon - rather like ground-up ... Why the dust clouds form is harder to understand. ...
    [ Сохраненная копия ]  Ссылки http://star.arm.ac.uk/~csj/research/rcb_review/node1.html -- 5.5 Кб -- 25.01.2002
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    87. Selected Armagh Solar System Preprints/Reprints
    ... Full Paper - PDF . 386 Leonid dust trail structure and predictions for 2002 . ... 367g The 2001 Leonids and Dust Trail Radiants . R.H. McNaught and D.J. Asher . ... Full Paper - PDF . 346 Leonid dust trail theories . D.J. Asher . ...
    [ Сохраненная копия ]  Ссылки http://star.arm.ac.uk/~aac/preprints-ss.html -- 16.5 Кб -- 22.03.2007
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    88. M.E. Bailey, Director
    ... this information to minimise the risk from the Leonid dust trails, for example by adjusting the satellite's orbit to place the satellite in the Earth's `shadow', or as far as possible from the centre of the dust trail, at the time of the peak meteoroid ...
    [ Сохраненная копия ]  Ссылки http://star.arm.ac.uk/annrep/annrep99/node15.html -- 16.7 Кб -- 05.05.2000
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    89. Terry Mosely's Bulletins
    ... Mars Dust Clouds: I hope that the following, from the BAA, is not the start of a major dust storm, which could obscure detail on the planet during the imminent record-breaking close approach - "Visual and CCD observations for July 1 reveal considerable ...
    [ Сохраненная копия ]  Ссылки http://star.arm.ac.uk/nibulletin/2003-Jul-3.html -- 5.0 Кб -- 04.07.2003
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    90. Armagh Astropark: Comets
    ... traditionally thought of being dirty snowballs – mostly frozen water with some dust ... at least two tails – one consisting of dust that has been pushed away by sunlight ...
    [ Сохраненная копия ]  Ссылки http://star.arm.ac.uk/~csj/pus/astropark/comets.htm -- 10.1 Кб -- 23.05.2002
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