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Message: <blockquote data-quote="Spata" data-source="post: 2306897" data-attributes="member: 1455"><img src="https://www.okshooters.com/data/MetaMirrorCache/farm4.staticflickr.com_3820_10052093356_eefc377e44_b.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /><img src="https://www.okshooters.com/data/MetaMirrorCache/3.bp.blogspot.com__ijaJZO52yL0_Ukvu_MBGFYI_AAAAAAAABjE_M9Pj7eDyrl4_s1600_Cattura.JPG" alt="" class="fr-fic fr-dii fr-draggable " style="" /><img src="https://www.okshooters.com/data/MetaMirrorCache/d1jqu7g1y74ds1.cloudfront.net_wp_content_uploads_2013_05_may07_aziave_color_539x580.png" alt="" class="fr-fic fr-dii fr-draggable " style="" />Estimates suggest that the nucleus of ISON is no larger than 4-6 km (3-4 miles) across while the comet’s dusty coma, or head of the comet is approximately 5,000 km (3,100 miles) across, or 1.2 times the width of Australia. A dust tail extends more than 92,000 km (57,000 miles).Read more: <a href="http://www.universetoday.com/102257/astronomers-detect-dust-feature-in-comet-isons-inner-coma/#ixzz2ggBigKOn" target="_blank">http://www.universetoday.com/102257/astronomers-detect-dust-feature-in-comet-isons-inner-coma/#ixzz2ggBigKOn</a></blockquote>