Let's
make everything one-billionth (10-9) as big as it really is
(9 orders of magnitude smaller)
The
Earth:Diameter = 13000 km = 1.3x107
m
1.3x107x10-9~
10-2 = 1.3 cm(a marble)
The
Sun:Diameter = 1,400,000 km = 1.4x109
m
(about
100 times the Earth?s)
so
it must be 1.4 m (about a foot less than my height)
Earth-Sun
Distance = 1.5x1011 m (1 Astronomical Unit)
1.5x1011x10-9=
1.5x102 m = 150 m
or
about one-and-a-half football fields
Jupiter
Distance = 5 AU,
Saturn
Distance = 10 AU (downtown Berkeley)
Pluto
Distance = 35 AU (6 km: Oakland)
1
Light Year:3x108 m/s
x 3x107 s/yr ~ 1016 m or 1013 km
scaled
down, that would be 1013-9 km or 10,000 km
(about
the distance to Europe)
The
nearest star is 4 light years away....
The
center of our Galaxy is 25000 ly away!!
(scaled
down, we?d be back out beyond the Sun...)