In 2009, we had the year of astronomy. Even President Obama hosted an astronomy night on the White House lawn. Your explorations of nature need not be limited to daylight hours--though it is important to point our when celestial objects like the Moon are visible during the day to counter misconceptions. This year, introduce your students to the night sky with an astronomy club, or even just a one-time event. There is just something special about the night sky, so spread some blankets on a grassy field, borrow a telescope from a university, and see what's up there.