Julian Muñoz has a ‘ruler’ that could size up the early universe

The measurement tool could lay out a distance scale for cosmic dawn

A headshot of theoretical physicist Julian Muñoz against a brightly lit backdrop

Theoretical physicist Julian Muñoz studies the universe’s early years, when the first stars began to shine and galaxies began to light up. He has come up with a way to measure distances in that era, called a standard ruler.

Nolan Zunk/The University of Texas at Austin

Julian Muñoz has come up with a ruler to measure the early universe.