A Raytheon employee works on the Griffin minimissile, one of the company's positive developments in 2012. Raytheon also won some healthy production contracts for weapons during the past year.
From missiles to microbes, here's a look back at some of the top stories and trends of 2012 - and what may lie ahead in 2013:
Artist's rendering shows the next-generation concentrating photovoltaic system under development by Tucson-based REhnu Inc.
The slimmer, lighter cooling system reduces shading on mirrors of the next-generation concentrating photovoltaic system.
With a major shakeout still ongoing in the solar-energy industry, new sun-harvesting technologies are dying on the vine - perhaps deservedly so, in some cases.
A large rotating furnace casts a telescope mirror at the University of Arizona's Steward Observatory Mirror Lab.
A prototype solar energy system designed by University of Arizona astronomy professor Roger Angel is tested in a courtyard between buildings on the UA campus. A fully functional system is under construction at the UA Science and Technology Park.
Mark Schwartz, a scientist, works at HTG Molecular Diagnostics Inc. at 3430 E. Global Loop, near South Palo Verde and East Valencia roads. The biotech company is expanding into new products.
Lab technician Becky Eichorst makes polymers at Medipacs, which operates at the Arizona Center for Innovation's "wet lab."
David Galbraith, center, a plant geneticist and professor, tests out a plate transfer robot at the Bio5 Institute at the University of Arizona.
Five years after its inception and nearly three years after losing most of its state funding, Arizona's public-private science partnership is still bearing fruit - particularly in Southern Arizona.