نجم كروي غازي ملتهب يشع ضوء وحرارة ويدور حوله عدد من الكواكب. SS

Celestial Mechanics and Dynamical Astronomy The Proceedings of the IAU 8th Asian-Pacific Regional Meeting, Volume I
"On the origin of the High-Perihelion Scattered Disk: the role of the Kozai mechanism and mean motion resonances" Quarterly Journal of the Royal Astronomical Society

"The age of the solar system redefined by the oldest Pb-Pb age of a meteoritic inclusion.

المجموعة الشمسية
Astronomical Society of the Pacific Conference Series
المجموعة الشمسية
Journey from the Center of the Sun
تدريبات وتطبيقات ( الصف الأول المتوسط ) الكون
University of New South Wales
The date is based on the oldest found to date in , and is thought to be the date of the formation of the first solid material in the collapsing nebula , "", 2002 Journal of Geophysical Research Space Physics , Volume 107, Issue A7, pp
" Nature Geoscience, in press, 2010 SSH 8-1, CiteID 1136, DOI 10

Monthly Notices of the Royal Astronomical Society.

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نجم كروي غازي ملتهب يشع حرارة وضوءا يدور حوله عدد من الكواكب
Levison, Martin J Duncan 1997
تدريبات وتطبيقات ( الصف الأول المتوسط ) الكون
and the Cassini Imaging Team July 18, 2007
SS
"Chondrule-forming Shock Fronts in the Solar Nebula: A Possible Unified Scenario for Planet and Chondrite Formation"