Explore the energy and matter cycles found within the Earth System. 

In this activity, students will analyze past and future eclipse data and orbital models to determine why we don’t experience eclipses every month.

Dr. Wickland works at NASA Headquarters in Washington, DC, where she oversees the planning and implementation of NASA's Terrestrial Ecology research program and leads its Carbon Cycle and Ecosystems Focus Area. She coordinates research programs in land cover and land use change, ocean biogeochemistry, terrestrial ecology, and biodiversity.