“DESI” Will Attempt to Create The Most Detailed 3D Map of the Universe

As part of an ambitious new survey of the cosmos, the Dark Energy Spectroscopic Instrument (DESI) will analyze light collected by the ultra-powerful Mayall telescope at Kitt Peak National Observatory. “DESI will record not only a galaxy’s light but also its spectrum,” according to Smithsonian Magazine, “by measuring how much light a given object emits at particular wavelengths.” It intends to compile this information into the most detailed 3D map of the universe—incorporating up to 40 million galaxies—and use the data within to probe questions about dark energy and gravity at the largest scale. Read more about the “galaxy-grabbing” instrument and its stellar efforts at Smithsonian Magazine.

Image courtesy of DESI Collaboration