What is the biggest thing in the universe? - The Chronicle

What is the biggest thing in the universe? - The Chronicle

Daniel StrainCU Boulder Jeremy Darling, professor in the Department of Astrophysical & Planetary Sciences, jumps into ‘What is the biggest thing in the universe?’ The… Login to continue reading Login Sign up for complimentary access Sign Up Now Close

If the Universe Is Expanding, What Is It Expanding Into?

Imagine peering into the night sky with a powerful telescope and seeing galaxies scattered across the cosmic landscape. Some are so distant that their light has been travelling for over 13 billion years just to reach us. This incredible fact tells us something profound about our universe: it began as a very small, unimaginably hot and dense region, and has been expanding and cooling ever since. This article aims to explain why our universe expan…