( It ( ( ( turns out ) ( it ( 's ( made ( of ( elements ( that ( are ( heavier ( than ( ( ( the hydrogen ) and ) ( helium ( that ( ( make up ) ( most ( of ( the universe ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP It)) (VP (VBZ turns) (PRT (RP out)) (SBAR (S (NP (PRP it)) (VP (VBZ 's) (VP (VBN made) (PP (IN of) (NP (NP (NNS elements)) (SBAR (WHNP (WDT that)) (S (VP (VBP are) (ADJP (ADJP (JJR heavier)) (PP (IN than) (NP (NP (DT the) (NN hydrogen)) (CC and) (NP (NP (NNP helium)) (SBAR (WHNP (WDT that)) (S (VP (VBP make) (PRT (RP up)) (NP (NP (JJS most)) (PP (IN of) (NP (DT the) (NN universe))))))))))))))))))))) (. .)))
It turns out it's made of elements that are heavier than the hydrogen and helium that make up most of the universe.
(ROOT (S (NP (DT The) (NN sun)) (ADVP (RB mostly)) (VP (VBD made) (PRT (RP up)) (PP (IN of) (NP (DT the) (NN element) (NN hydrogen)))) (. .)))