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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
  Petameter's Room - looking at the entire room
  Pm = 1015 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
1015 m    1 Pm
1016 m    10 Pm
1017 m    100 Pm


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

0

10

20

30
parsecs (pc)

light-Gigaseconds ( 109 lt·s )
0
1
2
3
4
5


Thumbnail of Petapaper.

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