أرسل هذا في رسالة قصيرة: Origin and early evolution of comet nuclei : workshop honouring Johannes Geiss on the occasion of his 80th birthday

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    ___     / _ \\   / ____||   / _ \\   /_   _// 
   /   ||  | / \ || / //---`'  | / \ ||    | ||   
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   \__ ||   \___//   \_____||   \___//   /__//    
    -|_||   `---`     `----`    `---`    `--`     
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