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.
(1.7581 * 10^53 kg) / (2 pi^2 (13.8 bln ly)^3) / (integrate_0^pi 2 sin^2 x / (pi x) dx)
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random