( ( According ( to ( ( modern astronomical ) ( ( observations and ) theory ) ) ) ) ( , ( ( the ( solar nebula ) ) ( ( ( ( ( was not ) ( nearly ( hot enough ) ) ) ( to ( ( melt rocks ) ( at ( ( the distance ) ( of ( the ( asteroid belt ) ) ) ) ) ) ) ) ( where ( ( ( the ( parent bodies ) ) ( of meteorites ) ) ( ( ( reside , ) nor ) ( are ( ( time scales ) ( as ( ( ( short ( as ( hours ( to days ) ) ) ) natural ) ( for ( such regions ) ) ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (VBG According) (PP (TO to) (NP (ADJP (JJ modern) (JJ astronomical)) (NNS observations) (CC and) (NN theory)))) (, ,) (NP (DT the) (JJ solar) (NN nebula)) (VP (VBD was) (RB not) (ADJP (RB nearly) (JJ hot) (RB enough)) (S (VP (TO to) (VP (VB melt) (NP (NNS rocks)) (PP (IN at) (NP (NP (DT the) (NN distance)) (PP (IN of) (NP (DT the) (JJ asteroid) (NN belt)))))))) (SBAR (WHADVP (WRB where)) (S (NP (NP (DT the) (NN parent) (NNS bodies)) (PP (IN of) (NP (NNS meteorites)))) (VP (VP (VBZ reside)) (, ,) (CC nor) (VP (VBP are) (NP (NP (NN time) (NNS scales)) (PP (IN as) (NP (NP (ADJP (JJ short) (PP (IN as) (NP (NP (NNS hours)) (PP (TO to) (NP (NNS days)))))) (JJ natural)) (PP (IN for) (NP (JJ such) (NNS regions))))))))))) (. .)))
According to modern astronomical observations and theory, the solar nebula was not nearly hot enough to melt rocks at the distance of the asteroid belt where the parent bodies of meteorites reside, nor are time scales as short as hours to days natural for such regions.
(ROOT (S (NP (NP (NNS Meteorites)) (, ,) (VP (VBN formed) (PP (IN of) (NP (NN split) (NNS asteroids) (CC or) (NN planetary) (NNS rocks)))) (, ,)) (VP (VBP provide) (NP (NP (NNS clues)) (PP (IN about) (NP (PRP$ our) (JJ solar) (NN system))))) (. .)))