Thousands of man-made things revolve around the Earth and most of them no longer function. There is a risk that this space debris will collide with working satellites, which provide vital services such as Global Positioning System (GPS) and weather warnings.
To track and predict its behavior, Professor Moriba Jah and colleagues built the AstriaGraph – a near-real-time map of where each object is in space. He explains that the system monitors about 200 “super scatterers” – large rocket objects with the ability to split into thousands of pieces.
Jennifer Green video.
To learn more about sustainability in space, listen to //www.everydayhealth.com/drugs/space/ BBC CrowdScience: Can space exploration be green?
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