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This set of three videos illustrates how math is used in satellite data analysis. NASA climate scientist Claire Parkinson explains how the Arctic and Antarctic sea ice covers are measured from satellite data and how math is used to determine trends... (View More) in the data. In the first video, she leads viewers from satellite data collection through obtaining a time series of monthly Arctic and Antarctic average sea ice extents for November 1978-December 2012. In the second video, she begins with the time series from the first video, removes the seasonal cycle by calculating yearly averages, and proceeds to calculate the slopes of the lines to get trends in the data, revealing decreasing sea ice coverage in the Arctic and increasing sea ice coverage in the Antarctic. In the third video, she uses a more advanced technique to remove the seasonal cycle and shows that the trends are close to the same, whichever method is used. She emphasizes the power of math and that the techniques shown for satellite sea ice data can also be applied to a wide range of data sets. Note: See Related & Supplemental Resources for the maps and data files (1978-2015) that will allow you to do the calculations shown in the video. These also include data for different regions of the Arctic and Antarctic, enabling learners to do additional calculations beyond those shown in the videos. (View Less)
This Science On a Sphere (SOS) module is designed to help the public better understand the story of water on Mars and how we're learning more about it. It portrays the mystery of what happened to the water on Mars in the context of a detective... (View More) story. NASA's MAVEN mission (Mars Atmosphere and Volatile EvolutoN) will help solve this mystery by studying the Martian atmosphere, how it has changed over time, and how it interacts with the Sun and the solar wind. The module also delves into Mars exploration, featuring past, present, and future Mars missions, and includes an activity comparing images of water-related features on Earth and Mars. It will help people understand that a planet's climate can change over time and how learning more about Mars helps us learn more about Earth and other planets as well. Resources included are: script, SOS playlist and datasets, background and tips for the docent or facilitator, and image comparisons of water-related features on Earth and Mars. (View Less)
This is an activity about the requirements of life. Learners will explore what living things need to survive and thrive by creating and caring for a garden plot (outdoors where appropriate) or a container garden (indoors) at the program facility.... (View More) The garden will be used to beautify the facility with plant life with many planting and landscaping options provided. Children will consider the requirements of living things, compare the surface conditions on Mars to those found on Earth, view images/video of a NASA Astrobiology Institute "garden" where astrobiologists are studying life under extreme conditions, and consider the similarities and differences in the type of life that would be possible on Mars as compared to their garden on Earth. It also includes specific tips for effectively engaging girls in STEM. This is activity 3 in Explore: Life on Mars? that was developed specifically for use in libraries. (View Less)
This short video (02:48) profiles Steve Nesbitt, a scientist affiliated with NASA's Global Precipitation Measurement (GPM) mission. Following a brief description of his career pathway, Nesbitt provides both an overview of the GPM mission as well as... (View More) insights into his work in validating and analyzing the GPM satellite data. (View Less)
This short video includes interviews with several key engineers who built and tested the Global Precipitation Measurement (GPM) Core Observatory at NASA Goddard Space Flight Center. Interviewees include: Beth Weinstein, GPM integration and test... (View More) engineer; Lisa Bartusek, GPM deputy mission systems engineer; and Carlton Peters, associate branch head at NASA Goddard Space Flight Center and GPM thermal branch development lead. (View Less)
This is a legacy site for videos and animations related to the Deep Impact mission and encounter with Tempel 1. Learners can watch videos about the mission, encounter, science, and results.