Is the universe infinite? It's one of the most profound questions we can ask, and here's the short answer: We don't know. While we have learned a great deal about the universe, a portion of the cosmos ...

the universe is infinite or finite, but it is believed that the universe is expanding based on observational records. If the universe is already infinite, what does it mean for it to expand further?

The surface of Earth is finite. We can measure it. If it was expanding, then its size would grow with time. And once again, good ol' Earth helps us understand what the universe might be doing beyond ...

This NASA/ESA Hubble Space Telescope image features the spiral galaxy Messier 77, also known as the Squid Galaxy. CREDIT: ESA/Hubble & NASA, L. C. Ho, D. Thilker. Get the Popular Science daily ...

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Everything you might want to know about infinity - in history and all the way to todays cutting-edge science. Infinity is surely the strangest idea that humans have ever had. Where did it come from ...