About the Book
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pages: 22. Chapters: Luna 15, Luna 23, Taruntius, Proclus, Dubyago, Macrobius, Condorcet, Cleomedes, Apollonius, Picard, Firmicus, Mare Marginis, Mare Crisium, Schubert, Eimmart, Glaisher, Legendre, Plutarch, Goddard, Lick, Peirce, Neper, Seneca, Auzout, Banachiewicz, Mare Undarum, Mare Smythii, Tisserand, Balmer, Da Vinci, Jenkins, Jansky, Cannon, Alhazen, Lyapunov, Holden, Tralles, Debes, Yerkes, Nobili, Hansen, Mare Anguis, Hubble, Peek, Palus Somni, Abbot, Condon, Virchow, Urey, Mare Spumans, Fredholm, Shapley, Pomortsev, Townley, Van Albada, Respighi, Liouville, Anville, Watts, Theiler, Tebbutt, Swift, Fahrenheit, Sinus Successus, Tacchini, Delmotte, Eckert, Ameghino, Lacus Bonitatis, Greaves, Back, Bombelli, Cartan, Boethius, Lacus Perseverantiae, Petit, Daly, Stewart, Crile, Asada, Krogh, Knox-Shaw, Wildt, Smithson, Sabatier, Curtis, Cameron, Dorsa Harker, Dorsum Oppel, Dorsa Tetyaev, Dorsum Termier, Dorsum Cushman, Dorsum Cayeux, Dorsa Cato. Excerpt: Luna 15 (Ye-8-5 series) was an unmanned space mission of the Soviet Luna program, also called Lunik 15. On July 21, 1969, while Apollo 11 astronauts finished the first human moonwalk, Luna 15 - an unmanned Soviet spacecraft in lunar orbit at the time, began its descent to the lunar surface. Launched only three days before the Apollo 11 mission, it was the third Soviet attempt to return lunar soil back to Earth. The Russian craft crashed on the moon at 15:50 UT - just a few hours before the scheduled American lift off. Luna 15 was capable of studying circumlunar space, the lunar gravitational field, and the chemical composition of lunar rocks. It was also capable of providing lunar surface photography. Luna 15 was placed in an intermediate Earth orbit after launch and was then sent toward the Moon. After a mid-course correction the day after launch, Luna 15 entered lunar orbit at 10: ..
