5000 Eyes opens with a view of a CLUES dark matter simulation. This simulation shows dark matter as a glowing, evolving web where galaxies form and interact with each other. These motions happen on timescales much longer than a human lifetime so we can’t actually watch it happen in real time. However, there is a way for astronomers to look back in time... The screen fades to a sunset on Kitt Peak and DESI, the Dark Energy Spectroscopic Instrument, is introduced. DESI is mapping out the positions of millions of galaxies to see what the largest structures in the universe look like and how they evolve.