Western Washington University   College of Science and Technology   Physics/Astronomy Dept.   Bellingham, WA USA

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The distance from the center of a circle or sphere to its edge or surface.

proton 5 x 10-15 m neutral hydrogen 5 x 10-11 m	ping pong ball .0189 m golf ball .0213 m billard ball .0286 m tennis ball .0320 m baseball .0374 m basketball .120 m bowling ball .109 m	arctic iceberg 30.5 m antarctic iceberg 4000 m Mt. Rainier (base) 9097 m
The Moon 1.74 x 106 m Earth 6.378 x 106 m Jupiter 7.14 x 107 m Pluto 1.12 x 106 m	Sun 6.96 x 108 m Betelgeuse (red giant) 2.09 x 1011 m Pleiades (open cluster) 4.62 x 1016 m Orion Nebula 9.25 x 1016 m M13 (globular cluster) 7.71 x 1017 m	Milky Way Galaxy 4.73 x 1020 m Local Group 1.54 x 1022 m galactic core (blackhole) 2.97 x 1011 m Virgo Supercluster 4.63 x 1022 m Universe (if H0 = 80) 1.16 x 1026 m

Mass   Velocity   Acceleration   Momentum   Radius   Density