Hey kids, NASA needs your help. And your iPhone.

For those of us setting out to catch the lunar eclipse early tomorrow morning — here’s a great piece in the Christian Science Monitor on why it’ll be so spectacular out here west of the Rockies — there’s nothing like an iPad armed with a great astronomy app. But according to Tim DeBenedictis, developer of SkySafari 3, his app is the only one that can predict this — and any other — eclipse. That’s fine with us, since he’s offering his app for free all this weekend.