Ep. 484: Transfer Orbits and Gravitational Assists
365 Days of Astronomy - Weekly Edition - A podcast by Fraser Cain & Dr. Pamela L. Gay - Mondays

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If you want to get around in the Solar System, you'll want to take advantage of natural gravitational speed boosts and transfer orbits. Whether you're heading to the outer Solar System or you want to visit the Sun itself, the planets themselves can help you in your journey.