Imagine Earth were to shrink to the size of a marble. We might be in trouble, but the planet would continue its smooth course around the sun while the moon would maintain its orbit, circling Earth ...

You can't get any bigger than infinite, right? Well, kind of. Late in the 19th century, German mathematician Georg Cantor showed that infinite comes in different types and sizes. Scientific American ...

What is the largest natural number possible? By using the word natural, I have ruled out the possibility that you simply answer infinity (∞) to torpedo the guessing game. But even if we allowed ...