▁solar ▁ne b ula . ▁Al most ▁all ▁meteor ites ▁( see ▁the ▁C any on ▁Di ablo ▁meteor ite ) ▁are ▁found ▁to ▁have ▁an ▁age ▁of ▁ 4 . 6   b ill ion ▁years , ▁suggesting ▁that ▁the ▁Sol ar ▁System ▁must ▁be ▁at ▁least ▁this ▁old . ▁ ▁Studies ▁of ▁disc s ▁around ▁other ▁stars ▁have ▁also ▁done ▁much ▁to ▁establish ▁a ▁time ▁frame ▁for ▁Sol ar ▁System ▁formation . ▁Stars ▁between ▁one ▁and ▁three ▁million ▁years ▁old ▁have ▁disc s ▁rich ▁in ▁gas , ▁whereas ▁disc s ▁around ▁stars ▁more ▁than ▁ 1 0   mill ion ▁years ▁old ▁have ▁little ▁to ▁no ▁gas , ▁suggesting ▁that ▁giant ▁plan ets ▁within ▁them ▁have ▁ceased ▁forming . ▁ ▁Tim eline ▁of ▁Sol ar ▁System ▁evolution ▁ ▁Note : ▁All ▁dates ▁and ▁times ▁in ▁this ▁chron ology ▁are ▁approximate ▁and ▁should ▁be ▁taken ▁as ▁an ▁order ▁of ▁magnitude ▁indicator ▁only . ▁ ▁See ▁also ▁ ▁Notes ▁ ▁References ▁ ▁Bibli ography ▁ ▁External ▁links ▁▁ 7 M ▁animation ▁from ▁sky and t eles cope . com ▁showing ▁the ▁early ▁evolution ▁of ▁the ▁outer ▁Sol ar ▁System . ▁ ▁Quick Time ▁animation ▁of ▁the ▁future ▁collision ▁between ▁the ▁Mil ky ▁Way ▁and ▁And rom eda ▁ ▁How ▁the ▁Sun ▁Will ▁Die : ▁And ▁What ▁H app ens ▁to ▁Earth ▁( Video ▁at ▁Space . com ) ▁ ▁Category : St ell ar ▁astronom y ▁Category : Plan et ary ▁science ▁Category : S olar ▁System ▁Category : S olar ▁System ▁dynamic