Leading this quest is the Dark Energy Spectroscopic Instrument (DESI), a global collaboration that maps the universe's 3D large-scale structure by measuring redshifts of tens of millions of celestial ...

At Kitt Peak National Observatory near Tucson, Arizona, a telescope views far into the cosmos recording the locations of millions of galaxies. The four-meter telescope is currently mapping the ...

Nine people are crammed in a tiny room with no ceiling on the grounds of Kitt Peak National Observatory ... while also ...

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

A team of astronomers has created the largest 3D map of our universe to date and tracked dark energy's influence on the ...

Astronomers may have found the long-missing half of the universe's regular matter—and it appears to have been right under our ...

A map of the cosmic microwave background ... on the Mayall four-meter Telescope at Kitt Peak National Observatory in Tucson, Arizona. They then looked for evidence of the so-called "Sunyaev ...

Washington, D.C.'s iconic cherry blossoms reached the 2025 peak bloom on Friday ... plants and cares for trees in the city, provides a map of where to see the blossoms across Washington.

If you’re stocking up on antihistamines and bracing for impact, AccuWeather put together three maps showing when common allergens are expected to peak across the continental U.S. Allergy ...

Physicists have proposed a new model of space-time that may provide the 'first observational evidence supporting string ...