A 3-D sky-mapping project that will measure the light of 35 million cosmic objects has received formal approval from the Department of Energy to move forward with construction. Installation of the ...

DESI will analyze light collected by the four-meter Mayall telescope at Kitt Peak National Observatory near Tucson, Arizona. KPNO / NOIRLab / NSF / AURA / B. Tafreshi An ambitious new sky survey is ...

Scientists could be wrong about dark energy. But they’re right about gravity, a new study suggests. Dark energy, the mysterious phenomenon that causes the expansion of the cosmos to accelerate, is ...

The telescope on the left is where the Dark Energy Cam (DECam) is mounted, surveying the skies as part of the DESI project. Credit: NOIRLab, National Science Foundation One of the mysteries of the ...