| Free preview: Glenn Chaple's Observing Basics, "An imperfect Moon" Get acquainted with our satellite's many mountains and craters. |
Glenn Chaple's Observing Basics: Study the Seven Sisters  December 2009: The Pleiades is one of the nearest star clusters to Earth and a popular observing target. |
| Glenn Chaple's Observing Basics: The Medicean stars November 2009: Jupiter's four largest moons were evidence that not all celestial bodies orbit Earth. |
| Glenn Chaple's Observing Basics: Predicting Neptune's existence October 2009: Discovering the eighth planet was a notable application of physics and mathematics. |
| Glenn Chaple's Observing Basics: Cruise the Milky Way September 2009: Get out to a dark-sky site to observe the wonder of our home galaxy. |
| Glenn Chaple's Observing Basics: Double the observing fun August 2009: Split some binary stars or measure an eclipsing binary's change in brightness. |
| Glenn Chaple's Observing Basics: Solar safety July 2009: Repeat Galileo's observations of the Sun, but be sure to protect your eyes and eyepieces. |
| Glenn Chaple's Observing Basics: Re-create a Galilean scope May 2009: Experience firsthand the telescope the famous astronomer used to survey the sky. |
| Glenn Chaple's Observing Basics: A swarm of stars April 2009: Discover why the Beehive Cluster has been a popular sky target since ancient times. |
| Glenn Chaple's Observing Basics: Feast on Saturn March 2009: Use 2009's edge-on appearance to observe the planet's other features and its moons. |
| Glenn Chaple's Observing Basics: Galileo's Orion February 2009: By pointing his telescope to the sky, Galileo found more stars than he bargained for. |
| Glenn Chaple's Observing Basics: The phases of Venus January 2009: Begin IYA2009 by replicating Galileo's observations of our "sister planet." |
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