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.
((2pi)^2 * (7.0915e+14)^2 / (6.67408e-11) )(1/(1.9885000000227) - 1/(1.9885))/(10^30)
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random