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How Big Are Things?
Home     Welcome
small Real
world

big     solar system between galaxy
nano
micro
meter
kilo
Mega
Giga
Tera
Peta
Exa
  Zettameter's Room - looking at the entire room
  Zm = 1021 m
look at a sheet of graph paper
 
galaxy21
 20
19
local stars18
 17
16
between15
 14
13
E's orbit12
 11
10
sun9
 8
7
texas6
 5
4
hood3
 2
1
you0
 -1
-2
salt grain-3
 -4
-5
bacteria-6
 -7
-8
atom-9
1021 m    1 Zm
1022 m    10 Zm
1023 m    100 Zm

Mega light-years (M ly)
0
10
20
30
40
50
60
70
80
90
100

0

10

20

30
Mega parsecs (Mpc)

light-Petaseconds ( 1015 lt·s )
0
1
2
3
4
5

I am uncertain the scale of the following diagram is correct.

source

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