0 . 3 ▁was ▁first ▁identified ▁as ▁an ▁S NR ▁in ▁ 1 9 8 4 ▁from ▁observations ▁made ▁with ▁the ▁V LA ▁radio ▁teles cope . ▁Because ▁of ▁its ▁unus ually ▁small ▁angular ▁size , ▁it ▁was ▁thought ▁to ▁be ▁young — less ▁than ▁about ▁one ▁thousand ▁years ▁old . ▁In ▁ 2 0 0 7 , ▁X - ray ▁observations ▁made ▁with ▁the ▁Ch andra ▁X - ray ▁Observ atory ▁revealed ▁that ▁the ▁object ▁was ▁about ▁ 1 5 % ▁larger ▁than ▁in ▁the ▁earlier ▁V LA ▁observations . ▁Further ▁observations ▁made ▁with ▁the ▁V LA ▁in ▁ 2 0 0 8 ▁verified ▁increase ▁in ▁size , ▁imp lying ▁it ▁is ▁no ▁more ▁than ▁ 1 5 0 ▁years ▁old . ▁A ▁more ▁recent ▁estimate ▁put ▁its ▁observable ▁age ▁at ▁ 1 1 0 ▁years ▁as ▁of ▁the ▁data ▁collection ▁in ▁ 2 0 0 8 . ▁That ▁study ▁also ▁found ▁that ▁it ▁was ▁probably ▁triggered ▁by ▁the ▁mer ger ▁of ▁two ▁white ▁d war f ▁stars . ▁ ▁Ann oun cement ▁The ▁discovery ▁that ▁G 1 . 9 + 0 . 3 ▁had ▁been ▁identified ▁as ▁the ▁young est ▁known ▁Gal actic ▁S NR ▁was ▁announced ▁on ▁May ▁ 1 4 , ▁ 2 0 0 8 ▁at ▁a ▁NASA ▁press ▁conference . ▁In ▁the ▁days ▁leading ▁up ▁to ▁the ▁announ cement , ▁NASA ▁said ▁that ▁they ▁were ▁going ▁" to ▁announ ce ▁the ▁discovery ▁of ▁an ▁object ▁in ▁our ▁Gal axy ▁astronom ers ▁have ▁been ▁hunting ▁for ▁more ▁than