Uh oh! Wolfram|Alpha doesn't run without JavaScript.
Please enable JavaScript. If you don't know how, you can find instructions
here
.
Once you've done that, refresh this page to start using Wolfram|Alpha.
((4e6 solar mass)/(proton mass)/(1e4 /cc))^(1/3)/(1 parsec)
((4e6 solar mass)/(proton mass)/(1e4 /cc))^(1/3)/(1 parsec)
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random