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Planetary scientist Tom Zega with the UA Lunar and Planetary Laboratory's transmission electronic microscope which will analyze dirt samples returned from the asteroid Bennu in 2023. The instrument has serial number 1.

UA to Get Early Sample of Asteroid for Study

The material should give a glimpse into the history of Bennu, and of the universe.

The sun rises over a grassy meadow in the White Mountains of Arizona.

Climate Scientist: Leaving Paris Accord Bad for Southwest

The region is already experiencing the effects of global warming, says Valerie Trouet.

Some tortoises are fitted with small GPS devices. This allows researchers to monitor travel patterns, as well as an animal’s overall health.

Team Maps Genome of Mojave Desert Tortoise

Researchers are looking there for a 'gold mine' of information about changes and adaptations.

Jupiter’s south pole, as seen by NASA’s Juno spacecraft from an altitude of 32,000 miles. The oval features are cyclones.

Tucson Camera on Jupiter Mission Reveals Cyclones

Tucson's Planetary Science Institute scientist manages Juno Cam for NASA.

Trump Budget Eliminates NASA Space Grant, Education Programs

Arizona Space Grant Consortium trains students for STEM careers

Once in the atmosphere, CFCs drift slowly upward to the stratosphere, where they are broken up by ultraviolet radiation, releasing the chlorine that catalytically destroys ozone. The destructive cycle of a chlorine atom is shown in the graphic.

As Stockpiles Dwindle, Freon Prices Rise

Supply and demand is the biggest factor, but the history of refrigerants shows other costs, and their future is unclear.

The dome of a telescope at the UA Sky Center campus on Mount Lemmon.

Mount Lemmon SkyCenter Open House Saturday

Telescopes, exhibits and family activities show off science of the mountain.

The Tucson Convention Center exhibit halls fill with students' exhibits at the annual Southern Arizona Research, Science and Engineering Foundation fair.

Oro Valley Student Wins Big at International Science Fair

Medical research earns a trip to Nobel Prize ceremonies.

Image from a section of the Lower Colorado River Planning Area.

Study to Measure Impact of Contaminant Perchlorate on Yuma Residents

The common chemical could be causing hypothyroidism in the southwestern Arizona town.

Wulfenite, Red Cloud Mine, La Paz County, Arizona.

Wulfenite Joins Other State Symbols as Official Mineral

The colorful mineral is found in few places outside Arizona.

Retired Marine General Charles Bolden at the Goddard Space Flight Center in 2010, when he was administrator of NASA.

Former NASA Administrator Sees Key Role for UA in Space

OSIRIS-REx mission to asteroid is unprecedented.

As much as 22 percent of Shackleton Crater’s surface could contain ice, according to data from NASA's Lunar Reconnaissance Orbiter. The crater is located at the lunar south pole.

Shadow-Piercing Camera from ASU to Study Moon

The ShadowCam will look at 'dark side of moon' to help plan future missions.

Kathy Angulo, left, and Alma Vizcarra hold their improved gastrostomy tube prototype

Arizona High School Pair Wins Medical Device Competition

San Luis students improved on a 'g-tube,' which helps patients who can't swallow food.

The deep blue of Cherenkov radiation reveals the location of the fuel assemblies within the open reactor core (foreground). The tube beneath the platform, a tube-shaped fuel handling machine extracts one of these assemblies.

Inside Arizona's Only Nuclear Power Plant

The plant shuts down a reactor periodically for maintenance and engineering tasks.

Several hundred people march from Armory Park to El Presidio Park April 22, 2017, for the Rally for Science - Tucson.

Thousands Rally in Tucson to Support Science

Earth Day event aimed at promoting, defending fact-based research.

Old Pima County courthouse in downtown Tucson.

Downtown Earth Day Rally Aims to Spark Interest in Science

Saturday event at Tucson's El Presidio Park is part of worldwide focus on science

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