We know essentially nothing about life beyond Earth.
( We ( ( ( know ( ( essentially nothing ) ( about life ) ) ) ( beyond Earth ) ) . ) )
(ROOT (S (NP (PRP We)) (VP (VBP know) (NP (NP (RB essentially) (NN nothing)) (PP (IN about) (NP (NN life)))) (PP (IN beyond) (NP (NNP Earth)))) (. .)))
We know everything about life beyond Earth. 
( We ( ( ( know ( everything ( about life ) ) ) ( beyond Earth ) ) . ) )
(ROOT (S (NP (PRP We)) (VP (VBP know) (NP (NP (NN everything)) (PP (IN about) (NP (NN life)))) (PP (IN beyond) (NP (NNP Earth)))) (. .)))