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www.johndcook.com | ||
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thatsmaths.com
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| | | | | There are five sweet spots where a spacecraft can keep pace with Earth as both orbit the Sun. They are called the Lagrange points, after the brilliant French mathematician Joseph-Louis Lagrange who found special solutions to what is called the "three-body problem". To locate the second Lagrange point, L2, draw a line 150 million km... | |
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retrorockets.wordpress.com
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| | | | | o let's get started making a little solar system of our own. Using our own solar system as an example, gas giants tend to have lots of moons, some of which are approach the size of terrestrial planets. Saturn's moon Titan, for example, is larger than the planet Mercury, while most other major... | |
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www.space.com
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| | | | | Geosynchronous orbits are vital to a wide array of technology allowing satellites to travel in sync with Earth as it rotates. We explore it in more detail here. | |
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science.nasa.gov
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| | | As NASA's Earth Science Division (ESD) continues the implementation of theDecadal Survey recommendationswith development of theEarth System Observatory, ESD leadership will regularly update the community on these activities, the current Program of Record (POR), and other Earth science news in a series of ESD Community Forums. Access to these public events is available via WebEx. [...] | ||
