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A picture of the movable secondary mirror during its installation in the Arcetri lab. The image shows the 672 tiny magnets spread over the back of the mirror. The reflecting face of the mirror is face down. The upper portion contains the electro-mechanical devices that control the magnets.

Fulfilling decades of promise, the international Large Binocular Telescope on Mount Graham is now capable of delivering the sharpest images of the universe ever taken. Read more»

Smooth Sections of Asteroid Itokawa

A Tucson scientist was part of the recovery team for a seven-year Japanese mission that could provide the first asteroid sample ever returned to Earth. Read more»

Saturn's largest moon, Titan, could be home to a methane-based life form.

Could Saturn’s cold, cloud-covered moon Titan host an exotic form of primitive life based on methane, in sharp contrast to the water-based life of Earth? Read more»

A map showing the extent of light pollution across the U.S. Credit: P. Cinzano, F. Falchi (University of Padova), C. D. Elvidge (NOAA National Geophysical Data Center, Boulder). Copyright Royal Astronomical Society. Reproduced from the Monthly Notices of the RAS by permission of Blackwell Science.

Globe at Night, which promotes the value of dark skies, set a record in 2010 with more than 17,800 measurements of night sky light pollution. The program teaches about the impact of excessive artificial lighting on local environments, and the ongoing loss of a dark night sky as a shared natural resource. Read more»

This view of one of the Mars Phoenix Lander's solar panels is a composite of multiple exposures taken by the spacecraft's Surface Stereo Imager camera.

NASA's Phoenix Mars Lander mission is officially over, thanks to sharp pictures from a Mars-orbiting camera that appear to show the collapse of the lander's solar panels due to an expected coating of heavy winter frost. Read more»

Zoë Bentley

A local home-schooled 13-year-old member of the Sahuaro Girl Scouts has won second prize in a NASA-led contest designed to encourage teens to consider careers in science and technology. Read more»

Intricate detail has been applied to every model.

An exhibition equal parts science, sculpture and horror show opens to the public Saturday as part of the Downtown Tucson Partnership’s continuing effort to enliven Tucson’s main urban corridor. Read more»

President Obama tours Space Exploration Technologies' commercial rocket processing facility at Cape Canaveral Air Force Station in Florida with CEO Elon Musk on April 15. Obama also visited the NASA Kennedy Space Center to talk about NASA's future.

The Obama administration’s new direction for NASA's human spaceflight program should be a modest benefit to Tucson’s aerospace community in the short term, but could be a major boost should its admittedly vague long-term goals pan out. Read more» 1

NASA's Cassini's spacecraft captured this image of Saturn's Titan moon.

Two researchers from Arizona and Arizona State universities are being hailed in the field of astrobiology, and a UA professor was elected to the National Academy of Sciences. Read more» 1

Dr. Jane Goodall and friend

World-famous primate researcher and conservationist Dr. Jane Goodall will speak at Pima Community College's northwest campus on Wednesday. Read more»

One of the next prominent signs of life in the ongoing revitalization of downtown Tucson may be a public exhibition of 160 specimens of cadavers and body parts. Read more» 3