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 ...

A particle-based calculation uses information theory to estimate cosmic bits, without proving information is a new state of ...

The Big Bang is often presented as if science has completely solved the beginning of the universe: everything started in one ...

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 ...

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 observable universe stretches for about 92 billion light-years across, but this does not allow us to determine the size of the entire cosmos. Measurements show that the area of space available to ...

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 ...

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 ...

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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 ...