, ▁ 2 0 0 6 ▁ ▁References ▁▁ ▁Category : 1 7 6 8 ▁birth s ▁Category : 1 8 3 4 ▁death s ▁Category : E c umen ical ▁Patri arch s ▁of ▁Constantin ople ▁Category : Pe ople ▁from ▁P ella ▁( m unicip ality ) ▁Category : M embers ▁of ▁the ▁Fil iki ▁E ter ia ▁Category : G reek ▁people ▁of ▁Bulgar ian ▁descent <0x0A> </s> ▁Sum m ert ide ▁( 1 9 9 0 ) ▁is ▁a ▁science ▁fiction ▁novel ▁by ▁American ▁writer ▁Charles ▁She ff ield , ▁the ▁first ▁of ▁his ▁series ▁of ▁Heritage ▁Un iverse . ▁The ▁story ▁takes ▁place ▁mill enn ia ▁in ▁the ▁future , ▁with ▁humans ▁having ▁extens ively ▁colon ized ▁our ▁spir al ▁arm ▁of ▁the ▁Mil ky ▁Way ▁and ▁having ▁encountered ▁a ▁number ▁of ▁intellig ent ▁al ien ▁races . ▁L itter ed ▁throughout ▁the ▁galax y ▁are ▁hundreds ▁of ▁massive ▁abandoned ▁engineering ▁projects ▁built ▁by ▁a ▁myster ious ▁race , ▁referred ▁to ▁as ▁The ▁Build ers , ▁ext inct ▁for ▁three ▁million ▁years . ▁An ▁ec lect ic ▁group ▁of ▁scient ists ▁and ▁opportun ists ▁are ▁desc ending ▁upon ▁one ▁such ▁artifact ▁at ▁a ▁time ▁when ▁its ▁surrounding ▁environment ▁is ▁extremely ▁dangerous ▁to ▁study ▁an ▁unusual ▁phenomen on . ▁ ▁The ▁novel ▁includes ▁ex cer pts ▁from ▁the ▁Lang ▁Universal ▁Art ifact ▁Catalog ▁( F our th ▁Edition ), ▁describing ▁several ▁Bu ilder ▁artifact s . ▁ ▁D iver gence ▁is ▁the ▁next ▁book ▁in ▁the ▁series . ▁▁▁