Our Place in the Universe

Where Are We - People?

Class:200 = 2x102
MSU:50,000 = 5x104
EL:50,000 = 5x104
MI:10,000,000 = 1x107
USA:275,000,000 = 2.75x108
World:6,000,000,000 = 6x109

Scientific Notation: Saves writing lots of numbers. Makes magnitude easier to read.

Where Are We - Size?

Baseball = 7 cm
Earth - Moon:   REarth = 6,400 km = 6.4x103 km
RMoon = 1,700 km 1.7x103 km
DE-M = 380,000 km = 3.8x105 km
Updated: 1999.09.13 (Monday) 21:48:52 EDT
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Visions of the Universe

Bob Stein's home page, email: steinr@pilot.msu.edu