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Demoted as a Planet, Pluto May Get Another Chance
Astronomers discussing new definition that would include it and other celestial bodies.
Kelly Twins: What Does a Year in Space Do to Body, Mind?
Astronaut Scott and earthbound twin Mark will contribute to scientific understanding.
Total Solar Eclipse in 6 Months Has Astronomers Preparing
Phenomenon can be seen in 70-mile swath from regon to South Carolina; partly visible in Arizona.
Former UA President Robert Shelton to Head Telescope Project
Shelton, the university's 19th president, has experience with global observatories.
On Way to Bennu, OSIRIS-REx Looks for 'Trojan' Asteroids
The rare objects are hidden from view of Earth's telescopes.
$60K 'Started Ball Rolling' on World-Class Astronomy Research at UA
Donation 100 years ago went for Steward Observatory at eastern edge of campus.
UA's Steward Observatory Celebrates 100th Anniversary
University ranked No. 1 among US space astronomy programs.
UA Astronomer Sees Asteroid 2 Days Before It Whizzes by Earth
NASA-funded Sky Lab's observers have ID'd half of known near-Earth objects.
Does 'Planet Nine' Exist? NAU Astronomer Says Maybe
Three objects discovered at edge of solar system may lead to planet's existence.
Meet Marshall Flippo, an 89-Year-Old Square Dance Caller Who Still Loves His Work
Also on Arizona Spotlight: Results from the state primary; the impending launch of OSIRIS-REx; and Gene Wilder remembered.
Asteroid Mission Focus of UA Planetary Science Open House
Next door, the Flandrau Science Center will unveil its renovated planetarium theater.
UA Scientists to Make 3-D Map of Universe for Dark Energy Clues
Kitt Peak instrument will measure light of 35 million objects over 5 years.
Tucson Planetary Researcher Awaits Far Out Photo Op
Camera aboard spacecraft Juno, now orbiting Jupiter, soon wll deliver images.
Two Meteor Showers Will Dazzle in Arizona's August Sky
Overlapping showers mean lots of visible shooting stars.
UA Student Discovers Distant Planet in Three-Star System
Four times Jupiter's mass, celestial body can offer clues to planetary formation.
UA Planetary Images Get (Postage) Stamp of Approval
Scientist’s work will now grace U.S. mail
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