Find out the latest from the crew of comet watchers on Kitt Peak
Astronomers gathered at Kitt Peak's McMath-Pierce Solar Telescope are elated, despite cloud cover that is keeping comet hidden for now
Author Paul Bogard says preserving darkness in important to all of us, not just astronomers.
Learn the latest olfactory science at Tuesday's Science Cafe
Monday includes a look through the historic telescope at Steward Observatory. Tuesday features pizza. Wednesday promises happiness.
Arizona’s oldest observatory has published its first scientific results from its newest telescope.
International Observe the Moon Night is Saturday
Comet Ison, a sun-grazing comet, will put on a good show for astronomers in November. Whether it survives to amaze all of us in December is still uncertain.
Comet Ison is looking pretty good as it approaches the sun, with a big, long tail and a greenish hue.
The University of Arizona's astronomy graduate students hope to persuade their department, their college and the Board of Regents to acknowledge them as astrophysicists as well as astronomers.
These beautiful blues and hairstreaks, members of the lycaenid butterfly family are part of a 1.5 million-specimen collection at the University of Arizona.
We've all inhaled gnats or eaten bugs in flour but at the Arizona Insect Festival, you can eat them with intention, while you learn about the most prolific and diverse creatures on Earth.
Explore the cosmos, visit the rain forest and learn the secret of happiness in a series of scientific lectures this fall.
Ty Taylor climbs above the canopy of an Amazon forest to measure its health with a variety of instruments on a 200-foot-tall flux tower.
Marielle Smith climbs into the canopy of a tropical forest in the Amazon Basin to install a light sensor.
Two environmental researchers from the University of Arizona will talk about their adventures in the Amazon Basin Thursday at Borderlands Brewing Company.
Firefighters employed burnouts to keep the Thompson Ridge Fire from destroying cabins in the historic district of the Valles Caldera National Preserve. Photographer Kristen Honig worked alongside the Granite Mountain hotshot crew to record t…
Shortly after their funding was renewed for another five years in June, University of Arizona researchers lost one of their critical-zone research sites to the 24,000-acre Thompson Ridge Fire in the Valles Caldera National Preserve near Jemez…
If you went outside and waved and smiled at Saturn Friday, here'e your photo.
NASA’s Cassini spacecraft is going to take our picture Friday afternoon and the space agency is encouraging us to go outside and wave at the camera, or at least smile, between 2:27 p.m. and 2:42 p.m. Arizona time.
A red-flag warning is in effect for Southeastern Arizona from noon today until 8 p.m. and again on Saturday afternoon through evening.
Joe Polchinski, professor at the Kavli Insitute for Theoretical Physics at UC Santa Barbara, has won one of three Physics Frontiers Prizes from the Fundamental Physics Prize Foundation.
Dean Ketelsen took this image (five frames stacked together) through a friend's telescope. You can read more about how he did it on his blog.
Dean Ketelsen took this silhouette of Kitt Peak with the comet setting behind the Quinlan Mountains last Wednesday along Arizona 286 south of Three Points.