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 don't know anything about life past Earth.
( We ( ( ( do n't ) ( ( know anything ) ( about ( life ( past Earth ) ) ) ) ) . ) )
(ROOT (S (NP (PRP We)) (VP (VBP do) (RB n't) (VP (VB know) (NP (NN anything)) (PP (IN about) (NP (NN life) (JJ past) (NN Earth))))) (. .)))