I'm not a physicist. Just so you know that. Anything you read here may be wrong. But then again, it's on the internet, so if you trust it, you're mad.
Enough self-aggrandisement. Here's what's here...
Ever wondered how many alien civilisations there are in the galaxy? Now's your chance to figure it out.
Now that we know the galaxy's infested with zillions of planets, you're probably wondering how long it'd take to travel thereto. You're probably also wondering how old your twin sibling will be when you get there. Lucky you found this site, then.
Boring background information: I've just rewritten this in PHP and MySQL. Not that I've anything against Perl, you understand. It's just that I thought PHP would be handy, and the database makes it easier to add in new planets as they're discovered.