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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.
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.
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.
Asteroid 2014 JO25 will pass close to Earth April 19.

Fast and Bright Asteroid to Near Earth Next Week

The Tucson-discovered space rock will be studied by astronomers all over the world for its properties.
An HD animation of Jupiter created with maps made with Hubble imagery, 2015.

Jupiter to Shine Its Brightest and Biggest

Largest planet making closest approach to Earth this year Friday.
New Horizons captured this image of Pluto's glacial ice cap in July 2015.

Demoted as a Planet, Pluto May Get Another Chance

Astronomers discussing new definition that would include it and other celestial bodies.
Mark Kelly, left, and Scott Kelly, right.

Kelly Twins: What Does a Year in Space Do to Body, Mind?

Astronaut Scott and earthbound twin Mark will contribute to scientific understanding.
NASA camera captured this total solar eclipse.

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.
The Giant Magellan Telescope will be constructed in the Las Campanas Observatory in Chile and will be commissioned in 2022.

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.
A picture postcard issued by the University of Arizona of Steward Observatory, 1955.

$60K 'Started Ball Rolling' on World-Class Astronomy Research at UA

Donation 100 years ago went for Steward Observatory at eastern edge of campus.
The Steward Observatory on the University of Arizona campus

UA's Steward Observatory Celebrates 100th Anniversary

University ranked No. 1 among US space astronomy programs.
Asteroid 2016 RB1 flew past Earth on Sept. 7, 2016 going an estimated 18,000 mph.

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.
Kuiper Space Sciences Building at the University of Arizona.

Asteroid Mission Focus of UA Planetary Science Open House

Next door, the Flandrau Science Center will unveil its renovated planetarium theater.

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