How Big Are Things? Home     Welcome	small		Real world	big			solar system		between	galaxy
	nano	micro		meter	kilo		Mega	Giga	Tera	Peta	Exa

km = 103 m

look at a sheet of graph paper

galaxy		21
		20 19
local stars		18
		17 16
between		15
		14 13
E's orbit		12
		11 10
sun		9
		8 7
texas		6
		5 4
hood		3
		2 1
you		0
		-1 -2
salt grain		-3
		-4 -5
bacteria		-6
		-7 -8
atom		-9

light-milliseconds ( 10-3 lt·s )
0	1	2	3	4	5

sound-seconds (in STP air)
0	1000	2000	3000	4000	5000

0	10	20	30	40	50	60
sound-minutes (in STP air)

It takes almost an hour for sound to travel 1000 km.

miles (mi)
0	100	200	300	400	500

US Census Tiger Map Server Slow and flakey at ths scale. Their "Scale" may not say 1:1000000 because they assume a 75bpi screen.

atmosphere, crust, rest of lithosphere (melted crust)
Mantle beneath. Thickness varies more than shown.

Oregon profile

Wildfire (Arizona, June 2002) (zoom in 10x)

You can see the Grand Canyon in north west Arizona.

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Io volcanic plume.

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Ceres

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Death Star

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