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A planetary mass the size of Mars could be warping the orbits of some smaller objects beyond Neptune.

Scientists See Clues of Possible Unseen Planet in Solar System

Disruption in the orbits of objects in the distant Kuiper Belt suggest a large body.
There are plenty of activities for kids at the UA Lunar and Planetary Lab's summer open house.

UA Lunar and Planetary Lab to Celebrate Years of Mars Photos

Annual open house will feature the work of HiRISE camera as well as activities for kids, adults.

UA Space Programs to Launch 'Asteroid Day' 2017 Stream

OSIRIS-REx, Catalina Sky Survey lead off programming.

A Tucson Family Observes Ramadan

Also on Arizona Spotlight: A summer insect forecast from "The King of Sting", and Beth Surdut's close encounter with a highly specialized desert denizen.

Changing Your Sleep Habits is Worth It, UA Researcher Says

Not getting enough sleep can result in memory and concentration issues, but also high blood pressure.
Okanaga rubrovenosa is one of the most prominent cicada species found in the Southwest U.S.

Cicadas Soundtrack Arrival of Summer, Monsoon in Arizona

Region hosts more than four dozen species.

The Art of Paying Attention: Zebra-Tailed Lizards

Author and wildlife illustrator Beth Surdut shares a surprisingly close encounter in midtown Tucson with one of the fastest sprinters in the desert.
A map of the path of the total solar eclipse occurring Aug. 21, 2017.

Tucson Astronomer to Lead Citizen Observations During Eclipse

Arizona to see partial blockage Aug. 21
Space artists retired astronaut Nicole Stott and planetary scientist William Hartmann of Tucson meet at Spacefest VIII.

Astronauts and Aficionados Enter Tucson's Orbit for Spacefest

Experts and fans rub shoulders during space-themed weekend.
The Gila topminnows are bred in two county aquariums and transported in an aerated bucket.

Planting Fish to Kill Mosquitoes: 'This Is Historical'

Endangered fish species going into swimming pool to eat larvae.
Henry Throop shows students how to use a telescope to observe sunspots during the day, at Dendron Secondary school in rural Limpopo, South Africa.

Planetary Scientist Honored for Global Outreach

Henry Throop to receive Carl Sagan Medal from astronomical society.
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.
A view of Earth from space.

Trump Budget Eliminates NASA Space Grant, Education Programs

Arizona Space Grant Consortium trains students for STEM careers

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