, ▁Volume ▁ 3 6 , ▁Issue ▁ 6 ▁( J une ▁ 2 0 0 8 ), ▁pp .   4 0 – 4 3 . ▁ ▁" Te chn ical ▁report ▁on ▁space ▁de br is , ▁ 1 9 9 9 ", ▁United ▁Nations , ▁ 2 0 0 6 . ▁. ▁ ▁External ▁links ▁▁▁ ▁S ative w ▁– ▁Track ing ▁Space ▁J unk ▁in ▁real ▁time ▁ ▁NASA ▁Or b ital ▁Deb ris ▁Program ▁Office ▁ ▁E SA ▁Space ▁Deb ris ▁Office ▁ ▁" Space : ▁the ▁final ▁j unk yard ", ▁document ary ▁film ▁ ▁Would ▁a ▁Sat urn - like ▁ring ▁system ▁around ▁planet ▁Earth ▁remain ▁stable ? ▁Abd ul ▁Ah ad ▁ ▁E IS CAT ▁Space ▁Deb ris ▁during ▁the ▁international ▁polar ▁year ▁ ▁Int ro ▁to ▁mathematical ▁model ing ▁of ▁space ▁de br is ▁flux ▁ ▁SO CR AT ES : ▁A ▁free ▁daily ▁service ▁predict ing ▁close ▁enc oun ters ▁on ▁orbit ▁between ▁sat ell ites ▁and ▁de br is ▁orbit ing ▁Earth ▁ ▁A ▁summary ▁of ▁current ▁space ▁de br is ▁by ▁type ▁and ▁orbit ▁ ▁Space ▁J unk ▁Astronom y ▁Cast ▁episode ▁No . ▁ 8 2 , ▁includes ▁full ▁trans cript ▁ ▁Paul ▁Male y ' s ▁Sat ellite ▁Page ▁– ▁Space ▁de br is ▁( with ▁photos ) ▁ ▁Space ▁Deb ris ▁Illustr ated : ▁The ▁Problem ▁in ▁Pictures ▁ ▁P AC A : ▁Space ▁Deb ris ▁ ▁IE EE ▁– ▁The ▁G row ing ▁Th re at ▁of