A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z

A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z

Gis forGalaxy

Photo of a galaxy

A galaxy is a large group of stars and planets held together by gravity. Galaxies are separated from each other by enormous distances.

NASA image and video library / Public domain