+2 is a superior solar system in which our solar system +1 is just an elementary unit.
+2 is the sun (nucleus) of +2.
+20 is the free atom which composes the gravitational field of +3 and +30.
+20 is the sun (nucleus) of +20.
+1 is the sign of our entire solar system and other similar solar systems in the galaxy.
+1 is the sign of the sun.
+10 is the free atom which composes the gravitational field of +2 and +20.
+10 is the sun of +10 (sometimes called "neutron star").
0 is our elementary atom which composes all matter in our space.
0 is the sun (nucleus) of 0.
00 is the free atom which composes the gravitational field of +1 and +10.
00 is the sun (nucleus) of 00.
-1 is an elementary atom composing the matter of 0 and 
0.
-1 is the sun (nucleus) of -1.
-10 is the free atom which composes the gravitational field of 0 and 00.
-10 is the sun (nucleus) of -10.
-2 is an elementary atom composing the matter of -1 and -1.
-2 is the sun (nucleus) of -2.
-20 is the free atom which composes the gravitational field of -1 and -10.
-20 is the sun (nucleus) of -20.
+1 is the planet orbiting around +1 (like the earth).
0 is the planet orbiting around 0 (sometimes called electron).
+1 is a piece of inanimate matter in our solar system +1 (composed of 0-s).
+1 is a living entity of our fauna in our solar system +1 (composed of 0-s).
0 is a piece of matter in the atom 0 (composed of -1-s).
0 is a living entity in the atom 0 (composed of -1-s).
is a general symbol of a free atom +10, 00, -10, -20, etc.
2 = Nitrogen molecule
2 = Oxygen molecule
