If dark energy is weakening, as suggested by recent results, then the cosmos is far stranger than most physicists had ...

Over billions of years, the universe has transformed from a simpler state into an intricate cosmic web, but new research ...

Cosmologist Katie Mack breaks down what the latest findings about dark energy mean for our universe’s future. Either way, it ...

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.

From Lowell Observatory to Kitt Peak to Mount Graham, here are the 11 best planetariums and observatories in Arizona and ...

Arizona is a hub for space exploration and stargazing ... Or take a road trip and visit Kitt Peak National Observatory near ...

With the previous and following occultations seen only from the Arctic and Russia, astronomers at Kitt Peak National Observatory in the Quinlan mountains near Tucson, Arizona, only had one shot at ...

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

Using the Dark Energy Spectroscopic Instrument (DESI) at the Kitt Peak National Observatory in Arizona, the researchers combined data from observing 15 million galaxies and quasars with other ...

Mayall 4-meter Telescope at Kitt Peak National Observatory in Tucson, Arizona. The instrument’s 5,000 fiber-optic “eyes” and extensive surveying capabilities are enabling scientists to build one of ...

Valley firefighters spent the day training at Lake Pleasant ahead of Arizona's peak wildfire season. The crews spend weeks in the natural elements to get wildfire ready. MARICOPA COUNTY ...