Learn more about space exploration, the tools we use to search the stars, what we’ve found so far, and the overview effect, a phenomenon many astronauts, including Sunita Williams, experience when ...

The boundary of everything humans can observe stretches roughly 92 billion light-years across, a figure shaped by 13.8 billion years of cosmic expansion since the Big Bang. That number, derived from ...

Why the 93-billion-light-year figure demands closer scrutiny A common misreading treats the size of the observable universe as a simple product of its age and the speed of light, which would yield a ...

Newswise — NASA’s James Webb Space Telescope has topped itself once again, delivering on its promise to push the boundaries of the observable universe closer to cosmic dawn with the confirmation of a ...

Measurements of ancient light from the cosmic microwave background suggest that the universe is remarkably flat. But that does not prove it is infinite, because the observable cosmos could be only a ...

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...

Forbes contributors publish independent expert analyses and insights. I cover aerospace, astronomy & hosted The Cosmic Controversy Podcast. Cosmic voids that stretch across millions even billions of ...

Add Popular Science (opens in a new tab) More information Adding us as a Preferred Source in Google by using this link indicates that you would like to see more of our content in Google News results.

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 ...