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.
(6370 km)^2*pi*1300 W/m^2 * 1 year in exajoules
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random
