The universe doesn’t revolve around Kitt Peak, but the observatory southwest of Tucson is at the center of what could be the biggest breakthrough in the study of the cosmos in decades.

A new trail in this southern Arizona city plots the most visitor-friendly astronomy stops—and there are plenty to choose from ...

In this combined image from NASA’s Spitzer Space Telescope and the Galaxy Evolution Explorer (GALEX), the star’s dusty outer layers are unraveling into space, glowing from the intense ...

New observations of the cosmos show that the dark energy, a mysterious force that accelerates the expansion of the universe, is evolving.

Utilizing a 4-meter optical telescope located at Kitt Peak National Observatory in Arizona, U.S., DESI has been performing high-precision measurements of redshifts from tens of millions of galaxies ...

The Rotunda Museum and Putnam Collection Center showcase historic artifacts, including Percival Lowell’s original telescope ... Details: 9 a.m.-4 p.m. daily. Kitt Peak National Observatory ...

The Rotunda Museum and Putnam Collection Center showcase historic artifacts, including Percival Lowell’s original telescope. Guided tours take ... Details: 9 a.m.-4 p.m. daily. Kitt Peak National ...