Meet NASA scientist Lynn Carter, who studies the geology of planetary surfaces, in this video adapted from NASA's Goddard Space Science Center. Carter describes how scientists learn about Earth by studying other planets and moons. Objects such as the Moon have older surfaces, which serve as a record of early solar system conditions, because they have not been subject to Earth's tectonic and erosive processes. Carter explains various aspects of her work, including image analysis, writing, field work, and the use of radar to penetrate through surfaces to see hidden features on Earth, Mars, and the Moon.
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At the end of a day devoted to Earth, people can look to the heavens for a beautiful shower of Lyrid meteors.
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NASA's Cassini Spacecraft is about to make a daring plunge through one of the plumes emerging from Saturn's moon Enceladus.
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This video is from 2015
NASA's MMS spacecraft are flying around Earth in a precise formation made possible by an out-of-this-world system of GPS navigators.
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