NEW YORK — Despite being in existence for more than 2,000 years, the concept of infinity has endured as an enigmatic, and oftentimes challenging, idea for mathematicians, physicists and philosophers.

Have you even thought deeply about Buzz Lightyear's famous catchphrase from the "Toy Story" movies? Probably not. But maybe you've sometimes looked up at the night sky and wondered about the nature of ...

When mathematician Georg Cantor first glimpsed the true nature of infinity, it changed mathematics forever. He demonstrated that infinity isn’t just endless—it exists in different sizes, each opening ...

In the late 19th century, Georg Cantor believed his new theory could help the Church understand the infinite nature of the ...

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 ...

Could it be that the number zero is another infinity? Does a perfect vacuum exist? Does absolute zero temperature really exist? It seems to me that both the physical and the mathematical worlds are ...

Your article on infinity deals with very large and very abstruse concepts of it. But what about smaller, everyday infinities? The number pi is something we use often enough, but it can only be ...