Learn more about Alexia Harper, Mechanical Engineer at NASA Goddard Space Flight Facility's Mechanical Engineering Branch, the go-to place for the comprehensive development of instrument and spacecraft structures and deployment mechanisms. She works among hundreds of designers, engineers, and technicians to build the largest spacecraft ever assembled at NASA's Goddard Space Flight Center, the Global Precipitation Measurement (GPM) Core Observatory.

The Guidance, Navigation, and Control Lead basically is in charge of all of the components to make sure the spacecraft is pointed where the scientists want it to be pointed.

Students investigate the effects of Hurricane Sandy and make a scale model of the storm over the continental United States to assess the area of impact.

The fires in Greece during the summer of 2007 devastated large tracks of forest and ground cover in this Mediterranean region. Students analyze these data to determine the scale, area, and percentage of the forest impacted by of these fires.

Explore using units for calculations with Normalized Difference Vegetation Index (NDVI). NDVI is a ratio of different light wavelength reflectance which can be used to map the density of green vegetation.