This book provides the reader with an insight into the science and technology of interstellar spaceflight. It also examines for the first time how it may be possible to exploit the Sun as a gravitational lens for the purposes of interstellar exploration.

The majority of books dealing with prospects for interstellar flight tackle the problem of the propulsion systems that will be needed to send a craft on an interstellar trajectory. The proposed book looks at two other, equally important aspects of such space missions, and each forms half of this two part book.

Part 1 looks at the ways in which it is possible to exploit the focusing effect of the Sun as a gravitational lens for scientific missions to distances of 550 AU and beyond into interstellar space. The author explains the mechanism of the Sun as a gravitational lens, the scientific investigations which may be carried out along the way to a distance of 550 AU (and at the 550 AU sphere itself), the requirements for exiting the Solar System at the highest speed and a range of project ideas for missions entering interstellar space.

Part 2 of the book deals with the problems of communicating between an interstellar spaceship and the Earth, especially at very high speeds. Here the author assesses a range of mathematical tools relating to the Karhunen-Loève Transform (KLT) for optimal telecommunications, technical topics that may one day enable humans flying around the Galaxy to keep in contact with the Earth. This part of the book opens with a summary of the author's 2003 Peek Lecture presented at the IAC in Bremen, which introduces the concept of KLT for engineers and 'newcomers' to the subject. It is planned to include a DVD containing the full mathematical derivations of the KLT for those interested in this important mathematical tool whilst the text itself will contain the various results without outlines of the mathematical proofs. Astronautical engineers will thus be able to see the application of the results without getting bogged down in the mathematics.

Autorentext

Claudio Maccone is a SETI astronomer, space scientist and mathematician. From 2012 to 2021 he chaired the SETI Permanent Committee of the International Academy of Astronautics (IAA) which is based in Paris. Author of over 100 scientific articles, he published 6 books about future Space Missions, SETI and Astrobiology. He is now Chair of the IAA Moon Farside Protection Permanent Committee which aims to preserve (at United Nations) the radio silence still existing on the other side of the moon, before it is destroyed by the political rivalries between the various spatial countries today. Andrea M.F. Valli, biophysicist and paleontologist. He was scientific advisor for the "Conseil général de l'Allier". Associated with the "Société Scientifique du Bourbonnais" (Allier), he participated in the cultural dissemination with conferences on paleontology and the evolution of life. Eugenio Mieli, degree in physics. He has always worked in TLC. Noting the relevance between Maccone's work in the book "Mathematical Seti" and the biological scenario described by Valli in the book "Bactéries, Dinosaures et Kangourous - Brève Histoire de la Biodiversité", has decided to face Drake's entire equation together with the two other authors.

Inhalt
Space missions to the Sun's gravity focus (550 to 1,000 AU).- So much gain at 550 AU.- Scientific investigations along the way to 550 AU.- Magnifying the nearby stellar systems.- Astrodynamics to exit the solar system at the highest speed.- SETI and the FOCAL space mission.- GL-SETI (gravitational lensing SETI): Receiving far ETI signals focused by the gravity of other stars.- The gravitational lenses of Alpha Centauri A, B, C and of Barnard's Star.- The Coronal Plasma pushing the focus of the gravity + plasma lens far beyond 550 AU.- NASA's Interstellar Probe (ISP:20102070?) and the Cosmic Microwave Background (CMB).- KLT-optimized telecommunications.- A simple introduction to the KLT (KarhunenLoève Transform).- KLT of radio signals from relativistic spaceships in uniform and decelerated motion.- KLT of radio signals from relativistic spaceships in hyperbolic motion.- KLT of radio signals from relativistic spaceships in arbitrary motion.- Genetics aboard relativistic spaceships.