Why Not Space? 24 views this month; 0 overall Ask a random sampling of people if they think we will have colonized space in 500 years, and I expect it will be a while before you run into someone who says it’s unlikely. Our migration from this planet is a seductive vision of the future that has been given almost tangible reality by our entertainment industry. I’m not going to claim that this vision is false: how could I know that? I was completely astonished by the prevalence of the “space” reaction to the inaugural Do the Math post on galactic-scale energy. The connotation is that we should not heed repeated warnings about our current collision course with a finite world when—by some clairvoyant means that eludes me—we know we are destined to colonize the infinite void beyond. Survey Says… Before we get going on practical matters, let me share the results of a survey question I have posed to college students in my classes. I make the question visual, which you can do as well. A Moment of Silence
The solar system and Phi, the golden ratio The dimensions of the Earth and Moon are in Phi relationship, forming a Golden Triangle The illustration above shows the relative sizes of the Earth and the Moon to scale. Draw a radius of the Earth (1)Draw a line from the center point of the Earth to the center point of the Moon (square root of Phi)Draw a line to connect the two lines to form a Golden Triangle (Phi). Using dimensions from Wikipedia and geometry’s classic Pythagorean Theorem, this is expressed mathematically as follows: This geometric construction is the same as that which appears to have been used in the construction of the Great Pyramid of Egypt. Source: Hidden Nature by Alick Bartholomew. Certain solar system orbital periods are related to phi Certain planets of our solar system seem to exhibit a relationship to phi, as shown by the following table of the time it takes to orbit around the Sun: Saturn reveals a golden ratio phi relationship in several of its dimensions Venus and Earth reveal a golden ratio phi relationship
Apollo 11 Flight Journal - Index Page National Aeronautics and Space AdministrationNASA History Division David Woods, Ken MacTaggart and Frank O'Brien Welcome to this 29 March 2011 release of the Apollo 11 Flight Journal, part of the Apollo Flight Journal series. Like its companion, the Apollo Lunar Surface Journal, it is intended to be a resource for all those interested in the Apollo program, whether in a passing or scholarly capacity. This journal covers the flight of Apollo 11, eventually from launch to splashdown. Journals for other Apollo flights are available at the AFJ Portal. Travelling from the Earth to the Moon Lunar Orbit Homeward Journey to Earth Photography Index Apollo 11 Documents (with thanks to Bob Andrepont) Journal Essays Correspondence regarding corrections, additions and typographic errors are welcome and should be sent to David Woods at , Ken MacTaggart at or to Frank O'Brien at . The corrected transcript, commentary, and other text incorporated in the Apollo Flight Journal is protected by copyright.
Project Icarus: Interstellar 'Kite Making' Guest contributor Adam Crowl, investigates how the development of a starship will ultimately transform the way we build things on Earth. Project Icarus is an ambitious five-year study into launching an unmanned spacecraft to an interstellar destination. Initiated by the Tau Zero Foundation and British Interplanetary Society, and managed by Icarus Interstellar Inc., a non-profit group of scientists dedicated to interstellar spaceflight, Icarus is working to develop a spacecraft that can travel to a nearby star. Adam Crowl, Module Lead for Fuel and Fuel Acquisition for Project Icarus, investigates the advancement in materials technology over the last 40 years and discusses how the construction of an interstellar probe may stimulate spin-off manufacturing technologies and techniques. When the Chinese built the first kites, nearly three thousand years ago, they used the materials available to them: silk and bamboo. That's just one of the many extremes the materials must endure.
The Space Elevator Blog - For scalable, inexpensive access to space… Photojournal: NASA's Image Access Home Page Wow! Signal - 30th Anniversary Report Introduction The "Wow!" source radio emission entered the receiver of the Big Ear radio telescope at about 11:16 p.m. Eastern Daylight Savings Time on August 15, 1977. Thus, at the time this article is being written it is near the 30th anniversary of the detection of that now famous radio source. What have we learned about that signal over the past 30 years? In this Introduction I will first describe briefly the "Big Ear" radio telescope. The "Big Ear" Radio Telescope Here is an aerial photo of the "Big Ear" radio telescope of the Ohio State University Radio Observatory looking approximately east by northeast. The aerial photo to the right shows a view looking north by northwest. The photo to the left is a view looking almost due west. Each of the above photos was taken in 1995, about 18 years after the occurrence of the "Wow!" More information can be found about the structures of the "Big Ear", Dr. The Computer Printout The Page Layout Below are two important images. 2nd L.O.
Centauri Dreams — The News Forum of the Tau Zero Foundation LiftPort Group - The Space Elevator Companies - Home La ceinture de Kuiper Après plusieurs années de recherche, Gérard Kuiper, planétologue américano-hollandais, réussit à établir une théorie en 1951. Cette dernière disait que, lors de la condensation du disque d’accrétion fait de gaz et de poussières, des fragments glacés auraient pu se maintenir au-delà de Neptune, formant une immense ceinture. Cette théorie avait par ailleurs l'avantage de trouver une réponse claire au sujet de l’origine des comètes périodiques (ou à courte période, c'est-à-dire ayant un cycle inférieur à 200 ans). En bref, les parties intérieures du disque se seraient condensées sous forme de planètes, et le bord extérieur, plus diffus, aurait produit un très grand nombre de petits objets. Cette théorie sera ensuite confirmée par des observations concrètes. Ce n'est qu'à partir de 1992 que des observations vinrent confirmer les travaux de Kuiper, avec la découverte d'un objet céleste, à savoir 1992 QB1, situé au-delà des orbites de Pluton et Neptune.
Tau Zero Foundation Plutopia News Network 100,000 Stars Atomic Rockets Your imagination has been captured by the roaring rockets from Heinlein's SPACE CADET or the Polaris from TOM CORBETT, SPACE CADET. But are such rockets possible? How does one go about defining the performance of these atomic-powered cruisers? This document gives some hints and equations that will allow back-of-the-envelope calculations on such matters. This site was mainly intended for science fiction authors who wanted a little scientific accuracy so they can write SF "the way God and Heinlein intended" (Arlan Andrews's Law). The engine and the torchship pages explain how easily do some of the calculations using Nomograms. . While this site originally focused on rocketry equations, as you can see it has grown to encompass other topics of interest to SF authors and game designers.