The world's most detailed 3D map of the universe will soon be here thanks to new upgrades at the Kitt Peak National Observatory in Arizona.
The new component, the Dark Energy Spectroscopic Instrument (DESI) [genannt]. was installed on Wednesday.
In anticipation of further construction, which is expected to be completed in 2019, DESI will begin a five-year-old offspring in the night sky. It measures how the universe has expanded over time and gathers better data about the dark energy, the mysterious power that makes up much of the universe and actively causes expansion.
The sensors of DESI will investigate a phenomenon red shift Just as the siren of an ambulance seems to change the pitch as it passes it, the light seems to shift the frequencies, depending on whether the source is towards you or away from you.
As galaxies move away from terrestrial observatories, the hue of light shifts towards the red side of the electromagnetic spectrum, depending on how fast they move. Other tools use the same phenomenon, but DESI will do it best.
DESI will align 5,000 tiny fiber optic cables to capture light from 35 million distant galaxies in high resolution. As these galaxies move through the constant movement of dark energy, DESI will see how fast they move, giving the scientists more accurate measurements of the dark energy's effects on the universe than ever before.
Scientists will use these measurements to learn more about how our Universe has evolved and where it will go in the future.
READ MORE: Rounding off a telescope with new tools to explore dark energy [ Berkeley Lab News Center ]