The most precise measurement of our expanding universe [Video]

With 5,000 tiny robots in a mountaintop telescope, researchers can look 11 billion years into the past.

The light from far-flung objects in space is just now reaching the Dark Energy Spectroscopic Instrument, or DESI, enabling us to map our cosmos as it was in its youth and trace its growth to what we see today.

Now, using the largest 3D map of our cosmos ever constructed, the DESI collaboration has made the most precise measurements to date of how fast the universe has expanded throughout its history. Understanding how our universe has evolved is tied to how …