UA's HiRISE camera caught the speeding bullet of a comet Sunday.
It may no longer be the national observatory, but its biggest telescopes have landed new scientific projects.
Erstwhile hurricane produced well-behaved storms that soaked without flooding badly.
Two supervisors have concerns about plans to bypass Tucson with new freeway.
Unless you're enough of an lunar fanatic to wake up at 3 a.m., a total eclipse of the moon will occur while you are sleeping tomorrow morning.
The lunatics will be up early Wednesday, and even if you’re not all that crazy about the moon, you might want to join them to view a full eclipse.
Dante Lauretta: NASA missions should inspire future scientists.
"Big science" doesn't come cheap. Unidentified donor gives $20 million for Chile project.
Some areas saw twice their rainfall average. Phoenix might be the biggest story.
A 2015 mission will add to enthusiasm for the recently demoted "dwarf."
Streetcar's allure is partly aesthetic, Star's Tom Beal concedes.
The donation is from the estate of philanthropist Agnese Nelms Haury.
Mike Leuthold of the University of Arizona's Atmospheric Sciences Department concluded early Wednesday that Odile's moisture would miss Tucson.
The Nicaragua explosion claim was intriguing to asteroid watchers.
Tucson's rain totals were impressive, but the rain in Phoenix was historic.
Most of the land burned in Arizona wildfires this year was managed.
The Tucson museum will exhibit 40 objects in its collection of treasures.
New star projector ain't much to look at, but sure can project.
A wet August boosts monsoon rain totals everywhere — except at Tucson airport.
Most of us won't lose brain cells or significant amounts of memory as we age.
The Arizona State Museum is adapting its venerable building to modern uses.
$9 million donation could help ease shortage of large-animal doctors.
A sea turtle chose a welcoming, posh beachfront, but the wrong month.
NASA funds five proposals for far-out projects and two are based in Tucson.
Meet Chris Impey — a natural showman with a knack for explaining science.
ASU's Charles Arntzen pioneered the plant biotechnology that led to an Ebola treatment.
Researchers at ASU's Biodesign Institute pioneered the use of tobacco plants to produce antibodies.
The LSST promises the widest, deepest, fastest view of the cosmos.
Two Oracle-area couples claimed their properties were destroyed in a backburn during the Bullock Fire in 2002.
We now know the beasts roamed North America as recently as 13,000 years ago.
UA researchers sequenced the gene of African rice and traced its evolution.
Most of Pima County received two to three inches of rain during July.
Tucson rainfall is below normal for July in an otherwise normal monsoon.
NASA has chosen seven instruments for the next Mars rover mission, set to launch in 2020.
This is it — last one — we're riding off into another beautiful sunset.
Tucson is the only city that can lay claim to being the home of the saguaro.
"Tucson in 100 Objects" generated a lot of suggestions — and controversy.
Out here in the Old Pueblo, the boys don't just sing, they do rope tricks.
Tucson's "Made in America" streetcar was designed to lure federal grants.
Effort ensures production of mirrors here for the Giant Magellan Telescope.
We’re defining Tucson in 100 objects. The daily series began April 20. Follow along at tucson.com/100objects
You wouldn't think a ski lift belonged in this list, but it does.
Once a year, the El Hoyo neighborhood becomes Bethlehem.
You don't have to be a "stupid motorist" to get in trouble when it rains in Tucson.
Hundreds of Tucsonans "Rock the 'Moc" each day, walking by plants that have been scientifically monitored for 109 years.
The Arizona Daily Star has chronicled life in Tucson for 137 years.
Program for engineering students from Hermosillo ends with "Soccer RoboCup."
They're an artistic twist on a Mexican tradition.
Sunday's open house highlights contributions UA planetary scientists made to that first moon walk 45 years ago.