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Hubble's Constant

• To: mathgroup at smc.vnet.net
• Subject: [mg92897] Hubble's Constant
• From: "Kevin J. McCann" <Kevin.McCann at umbc.edu>
• Date: Fri, 17 Oct 2008 05:24:30 -0400 (EDT)
• Organization: University System of Maryland

I am using the PhysicalConstants and Units packages. Hubble's constant 
yields

HubbleConstant

3.2 x 10^-18/Second

however

Convert[HubbleConstant, (Kilo Meter/Second)/(Mega Parsec)]

gives 98.7424 Kilo Meter/(Mega Parsec Second)

The accepted value is 70 km/s/Mpc. Am I missing something?

Kevin