Titlebook: Neural Nets WIRN Vietri-99; Proceedings of the 1 Maria Marinaro,Roberto Tagliaferri Conference proceedings 1999 Springer-Verlag London Limi

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ile these missions have revolutionised our knowledge and understanding of the solar system, they have inevitably been limited by the use of chemical propulsion, both alone and in combination with gravity assist manoeuvres. Most noticeably, almost all interplanetary missions to-date have been constra

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Simone Fiori,Pietro Burrascanogentle push that makes a solar sail such a useful propulsion system. Unfortunately, the Sun is also the limiting factor in the overall usefulness of a solar sail. When a spacecraft gets far from the Sun, there is simply not enough light available to provide additional propulsion. Recall the “inverse