The Universe, Wt. %

Bulk Earth, Wt. %

Human body, Wt. %

H, 73%

Fe, 32.1

O, 65.0

He, 25%

O, 30.1

C, 18.5

O, 0.80%

Si, 15.1

H, 9.5

C, 0.36%

Mg, 13.9

N, 3.2

Fe, 0.16%

S, 2.9

Ca, 1.5

Ne, 0.12%

Ni, 1.8

P, 1.0

N, 0.09%

Ca, 1.5

K, 0.4

Si, 0.07%

Al, 1.4

S, 0.3

Mg, 0.05%

Na, 0.2

S, 0.04%

H, 0.01

Cl, 0.2

o.c., 0.04

o.c., 1.2

o.c., 1.0