( ( The Earth ) ( ( ( ( ( orbits ( the Sun ) ) ( at ( ( a ( mean distance ) ) ( of ( ( ( 93 million ) miles ) ( -LRB- ( ( ( ( ( ( 1 astronomical ) unit ) , ) or ) AU ) -RRB- ) ) ) ) ) ) ) and ) ( ( takes ( ( 365.25 days ) ( -LRB- ( ( 1 ( Earth year ) ) -RRB- ) ) ) ) ( to ( complete ( one orbit ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN Earth)) (VP (VP (VBZ orbits) (NP (DT the) (NNP Sun)) (PP (IN at) (NP (NP (DT a) (JJ mean) (NN distance)) (PP (IN of) (NP (NP (QP (CD 93) (CD million)) (NNS miles)) (PRN (-LRB- -LRB-) (NP (NP (CD 1) (NNS astronomical)) (NP (NN unit)) (, ,) (CC or) (NP (NNP AU))) (-RRB- -RRB-))))))) (CC and) (VP (VBZ takes) (NP (NP (CD 365.25) (NNS days)) (PRN (-LRB- -LRB-) (NP (CD 1) (NN Earth) (NN year)) (-RRB- -RRB-))) (S (VP (TO to) (VP (VB complete) (NP (CD one) (NN orbit))))))) (. .)))
The Earth orbits the Sun at a mean distance of 93 million miles (1 astronomical unit , or AU) and takes 365.25 days (1 Earth year ) to complete one orbit.
(ROOT (S (NP (PRP It)) (VP (VBZ takes) (PP (IN about) (NP (NP (CD one) (NN year)) (PP (IN for) (NP (NN earth))))) (S (VP (TO to) (VP (VB orbit) (NP (DT the) (NN sun)))))) (. .)))
It takes about one year for earth to orbit the sun.