Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to ...

Cosmologists increasingly suggest that the universe may be flat — and if that’s true, it could also be infinite. In an ...

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 ...

Is the universe infinite, Aristotle asked in 350 BCE, “or is this an impossibility? The decision … is … all-important to our search for the truth.” The Greek ...

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In today’s bleak media landscape of legitimate news existing alongside rampant chatbot hallucinations and a social epidemic of disinformation, it should go without saying that you can’t believe ...

A few years ago, I watched the film Contact with Jodie Foster. At the end of the film, there is a shot of her standing in her backyard looking up into the sky. As the camera pans away from her face, ...

Cosmologists have an embarrassing problem: we don’t know what shape the universe is. The cosmos has three possible geometries—positively curved like a sphere, flat like an infinite plane or negatively ...