17. Venus Corona Venus is so bright, it can form a corona similar to the moon and sun
18. June 1991 Conjunction of Mars, Venus, and Jupiter http://www.stargazing.net/drsmith/vmj91a.jpg Planets can often be seen to form groups or conjunctions
23. Satellite Visibility A: Daylight, satellite not visible B: Twilight, satellite visible C: Night, satellite within earth’s shadow and not visible
24. Satellite Tracking This view of the International Space Station was taken through a telescope equipped with a tracking computer http://www.heavenscape.com/iss.gif