GRAVITATIONAL
ATTRACTION
OBJECTS
GRAVITY
PLANETS
MASSES
ORBIT
EARTH
FORCE
MOON
O
B
R
E
P
F
O
R
C
E
O
H
E
P
O
E
N
H
B
U
A
O
B
J
E
C
T
S
Y
U
A
U
E
L
U
Z
I
M
A
S
S
E
S
M
G
O
D
H
A
L
T
J
I
P
L
W
J
A
M
W
G
S
U
N
B
I
U
H
G
Q
I
V
I
R
V
J
R
U
O
V
B
Z
A
O
R
O
S
J
N
K
U
E
Q
I
I
R
Z
T
U
E
J
U
Z
A
Y
J
P
Q
T
I
O
I
T
T
E
N
N
K
A
T
Z
L
P
A
H
N
I
R
A
H
E
O
A
U
I
E
A
A
T
E
T
I
A
G
V
L
O
O
I
V
A
N
W
I
E
K
B
C
K
H
S
M
F
A
A
R
E
R
V
A
A
C
T
S
Q
E
O
R
X
R
T
T
E
A
I
S
I
I
O
H
Z
Y
K
A
G
H
S
N
R
W
O
J
O
R
O
Q
H
O
C
U
I
H
A
G
I
L
P
N
O
Q
T
I
M
D
U
