Richard F. Caris gift will help build the Giant Magellan Telescope.
NASA's first mission to Pluto will begin sending images to Earth early next year.
Two talks this week on the UA campus bring astronomy to the general public.
Expo to draw thousands of amateur astronomers this weekend.
This image of Jupiter shows a moon shadow on the giant planet's Great Red Spot.
Events at the University of Arizona and Pima College will allow you to view the eclipse without harming your eyes.
The partial eclipse next Thursday will be visible from much of the United States and Canada. Unfortunately, it will not be a total eclipse, which is much rarer and much more spectacular.
It may no longer be the national observatory, but its biggest telescopes have landed new scientific projects.
Fomalhaut is the 18th brightest star in the sky.
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.
If you rise any time before dawn, go outside for a look.
"Big science" doesn't come cheap. Unidentified donor gives $20 million for Chile project.
Fall arrives next week, and Mars is moving eastward.
The Nicaragua explosion claim was intriguing to asteroid watchers.
New star projector ain't much to look at, but sure can project.
Mercury is reasonably bright, but difficult to see so close to the sun.
Sagittarius is supposed to look like a centaur, but that's not really accurate.
Venus and Jupiter heading for a planetary conjunction.
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.