Astronomy Web Tool Kit

Phases of the Moon
Kepler's Laws of Planetary Motion
Planetary Atmospheres
Energy Levels and Spectral Lines
Craters and Surface Ages
Density of the Terrestrial Planets
Magnitude Calculator

Free Astronomy Software

Celestia, cosmic 3-D simulator
Google Earth shows the night sky
Google Mars: explore the Red Planet
Stellarium, a planetarium program
Orbiter, space flight simulator
Heavens Above: track a satellite

Observatories in Arizona

Kitt Peak National Observatory
(west of Tucson, open to visitors)
Lowell Observatory
(in Flagstaff, open to visitors)
Discovery Channel Telescope
(near Flagstaff, under construction)
Mt. Graham International Observatory
(near Safford, guided tours)
Fred Lawrence Whipple Observatory
(south of Tucson, guided tours)

Arizona Science Centers & Planetariums

Dorrance Planetarium
      at Arizona Science Center
Challenger Space Center (Peoria, AZ)
UofA Flandrau Science Center & Planetarium

Local Astronomy Clubs

East Valley Astronomy Club
Saguaro Astronomy Club
Phoenix Astronomical Society

Other Astronomy Sites in the Southwest

Meteor Crater (east of Winslow, AZ)
Very Large Array (western New Mexico, on US Highway 60)

Astronomy News and What's Up?

Space News at Live Science
Near-Earth weather at NASA Space Weather
Night-time forecast at Clear Sky Clock
Sky & Telescope's Sky at a Glance

Astronomy Image Archives

Astronomy Picture of the Day
NASA Planetary Photojournal
NASA Human Spaceflight Gallery
Hubble Space Telescope Gallery
Hubble Heritage Project
NASA Image Exchange
NOAO Image Gallery

Space-based Observatories

Compton Gamma Ray Observatory
Fermi Space Telescope
Chandra X-Ray Observatory
GALEX: Galaxy Ultraviolet Explorer
Hubble Space Telescope
Kepler Planet-hunting Mission
Spitzer Space Telescope
Herschel Infrared Observatory
Wilkinson Microwave Observatory
Planck Microwave Observatory

Missions to the Solar System

Solar Dynamics Observatory active
Solar and Heliospheric Observatory active
MESSENGER to Mercury (Mar 2011 - present)
Magellan at Venus (1989 - 1994)
Venus Express (May 2006 - present)
Lunar Recon. Orbiter (June 2009 - present)
LCROSS Impactor (impacted Oct 9, 2009)
Mars Global Surveyor (1997 - 2006)
2001 Mars Odyssey (Oct 2001 - present)
Mars Express (Dec 2003 - present)
Mars Exploration Rovers (Jan 2004 - present)
MSL Curiosity rover (arrival Aug 2012)
Mars Recon. Orbiter (Mar 2006 - present)
Mars Phoenix Lander (May - Nov 2008)
Dawn to Vesta and Ceres (at Vesta, Jul 2011)
Galileo at Jupiter (1995 - 2003)
Juno to Jupiter (arrival 2016)
Cassini at Saturn (July 2004 - present)
New Horizons to Pluto (arrival 2015)
The Voyagers to outer Solar System (1977 - ?)

Chronological List Of All Missions (1957-?)