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Tom Gaskins

Tom Gaskins is the technical director for NASA Learning Technologies. His interests are in visualization, 3D graphics and web services, especially their application to huge data collections. He has previously written two 3D graphics programming guides for O’Reilly & Associates. He can be reached at



You've seen the beautiful images of Earth from space taken by NASA astronauts and satellites. By viewing a series of images one after another like frames of a movie, you can replay and study changes due to weather, natural events, and human activities. This article describes how to write Java...