Project Horizon Report
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Photochemically Driven Collapse of Titan's Atmosphere
REPORTS has escaped, the surface temperature again Photochemically Driven Collapse decreases, down to about 86 K, slightly of Titan’s Atmosphere above the equilibrium temperature, because of the slight greenhouse effect resulting Ralph D. Lorenz,* Christopher P. McKay, Jonathan I. Lunine from the N2 opacity below (longward of) 200 cm21. Saturn’s giant moon Titan has a thick (1.5 bar) nitrogen atmosphere, which has a These calculations assume the present temperature structure that is controlled by the absorption of solar and thermal radiation solar constant of 15.6 W m22 and a surface by methane, hydrogen, and organic aerosols into which methane is irreversibly converted albedo of 0.2 and ignore the effects of N2 by photolysis. Previous studies of Titan’s climate evolution have been done with the condensation. As noted in earlier studies assumption that the methane abundance was maintained against photolytic depletion (5), when the atmosphere cools during the throughout Titan’s history, either by continuous supply from the interior or by buffering CH4 depletion, the model temperature at by a surface or near surface reservoir. Radiative-convective and radiative-saturated some altitudes in the atmosphere (here, at equilibrium models of Titan’s atmosphere show that methane depletion may have al- ;10 km for 20% CH4 surface humidity) lowed Titan’s atmosphere to cool so that nitrogen, its main constituent, condenses onto becomes lower than the saturation temper- the surface, collapsing Titan into a Triton-like frozen state with a thin atmosphere. -
Domi Inter Astra
Team members Alice Sueko Müller | Anshoo Mehra | Chaitnya Chopra | Ekaterina Seltikova Isabel Alonso Serrano | James Xie | Jay Kamdar | Julie Pradel | Kunal Kulkarni Matej Poliaček | Myles Harris | Nitya Jagadam | Richal Abhang | Ruvimbo Samanga | Sagarika Rao Valluri Sanket Kalambe | Sejal Budholiya | Selene Cannelli Space Generation Advisory Council Team 1 Contents Society and Culture 3 Tourist Attractions 3 Astronaut and Tourist Selection 3 Architecture 4 Module 1: Greenhouse, Guest Amenities, Medicine, and Environmental Control 5 Module 2: Social Space and Greenhouse 5 Module 3: Kitchen, Fitness, Hygiene, and Social 6 Module 3: Sky-view 6 Module 4: Crew Bedrooms and Private Social Space 6 Module 5: Workspace 6 Management and Politics 7 Governance, Ownership, and Intellectual Property 7 Crew Operations 7 Base Management System 8 Safety & Emergency Planning 8 Engineering 9 Landing & Settlement Site 9 Settlement Structure 10 Robotics and Extravehicular Activities (EVAs) 10 Construction Timeline 11 Communications System 12 Critical Life Support (Air & Water) Systems 12 Thermal System 13 Food & Human Waste Recycling 14 Other Waste 14 Technical Floor Plan 14 Power Generation & Storage 14 Economy 16 Capital & Operating Costs 16 Revenue Generation 17 Tourism & Outreach 17 Commercial Activities 18 Lunar Manufacturing 18 References 20 ntariksha, aptly meaning ‘the universe’ in to be a giant leap for all the young girls around the Sanskrit, is an avid stargazer fascinated world, and she knew something incredible is waiting by the blanket of splurging stars she saw to be known. from her village in North East India. To- day, her joy knew no bounds upon learn- “Each civilization must become space-faring or ex- ingA that she would get a chance to visit Domi Inter tinct”. -
Exploring How the Outer Space Treaty Will Impact American Commerce and Settlement in Space
S. HRG. 115–219 REOPENING THE AMERICAN FRONTIER: EXPLORING HOW THE OUTER SPACE TREATY WILL IMPACT AMERICAN COMMERCE AND SETTLEMENT IN SPACE HEARING BEFORE THE SUBCOMMITTEE ON SPACE, SCIENCE, AND COMPETITIVENESS OF THE COMMITTEE ON COMMERCE, SCIENCE, AND TRANSPORTATION UNITED STATES SENATE ONE HUNDRED FIFTEENTH CONGRESS FIRST SESSION MAY 23, 2017 Printed for the use of the Committee on Commerce, Science, and Transportation ( Available online: http://www.govinfo.gov U.S. GOVERNMENT PUBLISHING OFFICE 29–998 PDF WASHINGTON : 2018 For sale by the Superintendent of Documents, U.S. Government Publishing Office Internet: bookstore.gpo.gov Phone: toll free (866) 512–1800; DC area (202) 512–1800 Fax: (202) 512–2104 Mail: Stop IDCC, Washington, DC 20402–0001 VerDate Nov 24 2008 10:53 May 15, 2018 Jkt 075679 PO 00000 Frm 00001 Fmt 5011 Sfmt 5011 S:\GPO\DOCS\29998.TXT JACKIE SENATE COMMITTEE ON COMMERCE, SCIENCE, AND TRANSPORTATION ONE HUNDRED FIFTEENTH CONGRESS FIRST SESSION JOHN THUNE, South Dakota, Chairman ROGER F. WICKER, Mississippi BILL NELSON, Florida, Ranking ROY BLUNT, Missouri MARIA CANTWELL, Washington TED CRUZ, Texas AMY KLOBUCHAR, Minnesota DEB FISCHER, Nebraska RICHARD BLUMENTHAL, Connecticut JERRY MORAN, Kansas BRIAN SCHATZ, Hawaii DAN SULLIVAN, Alaska EDWARD MARKEY, Massachusetts DEAN HELLER, Nevada CORY BOOKER, New Jersey JAMES INHOFE, Oklahoma TOM UDALL, New Mexico MIKE LEE, Utah GARY PETERS, Michigan RON JOHNSON, Wisconsin TAMMY BALDWIN, Wisconsin SHELLEY MOORE CAPITO, West Virginia TAMMY DUCKWORTH, Illinois CORY GARDNER, Colorado -
Exploration of the Moon
Exploration of the Moon The physical exploration of the Moon began when Luna 2, a space probe launched by the Soviet Union, made an impact on the surface of the Moon on September 14, 1959. Prior to that the only available means of exploration had been observation from Earth. The invention of the optical telescope brought about the first leap in the quality of lunar observations. Galileo Galilei is generally credited as the first person to use a telescope for astronomical purposes; having made his own telescope in 1609, the mountains and craters on the lunar surface were among his first observations using it. NASA's Apollo program was the first, and to date only, mission to successfully land humans on the Moon, which it did six times. The first landing took place in 1969, when astronauts placed scientific instruments and returnedlunar samples to Earth. Apollo 12 Lunar Module Intrepid prepares to descend towards the surface of the Moon. NASA photo. Contents Early history Space race Recent exploration Plans Past and future lunar missions See also References External links Early history The ancient Greek philosopher Anaxagoras (d. 428 BC) reasoned that the Sun and Moon were both giant spherical rocks, and that the latter reflected the light of the former. His non-religious view of the heavens was one cause for his imprisonment and eventual exile.[1] In his little book On the Face in the Moon's Orb, Plutarch suggested that the Moon had deep recesses in which the light of the Sun did not reach and that the spots are nothing but the shadows of rivers or deep chasms. -
Light, Color, and Atmospheric Optics
Light, Color, and Atmospheric Optics GEOL 1350: Introduction To Meteorology 1 2 • During the scattering process, no energy is gained or lost, and therefore, no temperature changes occur. • Scattering depends on the size of objects, in particular on the ratio of object’s diameter vs wavelength: 1. Rayleigh scattering (D/ < 0.03) 2. Mie scattering (0.03 ≤ D/ < 32) 3. Geometric scattering (D/ ≥ 32) 3 4 • Gas scattering: redirection of radiation by a gas molecule without a net transfer of energy of the molecules • Rayleigh scattering: absorption extinction 4 coefficient s depends on 1/ . • Molecules scatter short (blue) wavelengths preferentially over long (red) wavelengths. • The longer pathway of light through the atmosphere the more shorter wavelengths are scattered. 5 • As sunlight enters the atmosphere, the shorter visible wavelengths of violet, blue and green are scattered more by atmospheric gases than are the longer wavelengths of yellow, orange, and especially red. • The scattered waves of violet, blue, and green strike the eye from all directions. • Because our eyes are more sensitive to blue light, these waves, viewed together, produce the sensation of blue coming from all around us. 6 • Rayleigh Scattering • The selective scattering of blue light by air molecules and very small particles can make distant mountains appear blue. The blue ridge mountains in Virginia. 7 • When small particles, such as fine dust and salt, become suspended in the atmosphere, the color of the sky begins to change from blue to milky white. • These particles are large enough to scatter all wavelengths of visible light fairly evenly in all directions. -
Go for Lunar Landing Conference Report
CONFERENCE REPORT Sponsored by: REPORT OF THE GO FOR LUNAR LANDING: FROM TERMINAL DESCENT TO TOUCHDOWN CONFERENCE March 4-5, 2008 Fiesta Inn, Tempe, AZ Sponsors: Arizona State University Lunar and Planetary Institute University of Arizona Report Editors: William Gregory Wayne Ottinger Mark Robinson Harrison Schmitt Samuel J. Lawrence, Executive Editor Organizing Committee: William Gregory, Co-Chair, Honeywell International Wayne Ottinger, Co-Chair, NASA and Bell Aerosystems, retired Roberto Fufaro, University of Arizona Kip Hodges, Arizona State University Samuel J. Lawrence, Arizona State University Wendell Mendell, NASA Lyndon B. Johnson Space Center Clive Neal, University of Notre Dame Charles Oman, Massachusetts Institute of Technology James Rice, Arizona State University Mark Robinson, Arizona State University Cindy Ryan, Arizona State University Harrison H. Schmitt, NASA, retired Rick Shangraw, Arizona State University Camelia Skiba, Arizona State University Nicolé A. Staab, Arizona State University i Table of Contents EXECUTIVE SUMMARY..................................................................................................1 INTRODUCTION...............................................................................................................2 Notes...............................................................................................................................3 THE APOLLO EXPERIENCE............................................................................................4 Panelists...........................................................................................................................4 -
JAXA's Space Exploration Activities
JAXA’s Space Exploration Activities Jun Gomi, Deputy Director General, JAXA Hayabusa 2 ✓ Asteroid Explorer of the C-type asteroid ✓ Launched in December, 2014 ✓ Reached target asteroid “Ryugu” in 2018 ✓ First successful touchdown to Ryugu on February 22, 2019 ✓ Return to Earth in 2020 (162173) Ryugu 2 Hayabusa 2 (c) JAXA, University of Tokyo, Kochi University, Rikkyo University, (c) JAXA, University of Tokyo, Kochi University, Rikkyo University, Nagoya University, Chiba Institute of Technology, Meiji University, Nagoya University, Chiba Institute of Technology, Meiji University, University of Aizu and AIST. University of Aizu, AIST Asteroid Ryugu photographed from a Asteroid Ryugu from an altitude of 6km. distance of about 20 km. The image Image was captured with the Optical was taken on June 30, 2018. Navigation Camera on July 20, 2018. Hayabusa 2 4 JAXA’s Plan for Space Exploration International • Utilization of ISS/Kibo • Cis-Lunar Platform (Gateway) Cooperation • Lunar exploration and beyond Industry & • JAXA Space Exploration Innovation Academia Hub Partnerships • Science Community discussions JAXA’s Overall Scenario for International Space Exploration Mars, others ★ Initial Exploration ★ Full Fledge Exploration MMX: JFY2024 • Science and search for life • Utilization feasibility exam. Kaguya Moon ©JAXA ©JAXA ©JAXA ©JAXA ©JAXA Full-fledged Exploration & SLIM Traversing exploration(2023- ) Sample Return(2026- ) Utilization (JFY2021) • Science exploration • S/R from far side • Cooperative science/resource • Water prospecting • Technology demo for human mission exploration by robotic and human HTV-X der.(2026- ) • Small probe deploy, data relay etc. Gateway Phase 1 Gateway (2022-) Phase 2 • Support for Lunar science Earth • Science using deep space Promote Commercialization International Space Station 6 SLIM (Smart Lander for Investigating Moon) ✓ Demonstrate pin-point landing on the moon. -
Mobile Lunar and Planetary Base Architectures
Space 2003 AIAA 2003-6280 23 - 25 September 2003, Long Beach, California Mobile Lunar and Planetary Bases Marc M. Cohen, Arch.D. Advanced Projects Branch, Mail Stop 244-14, NASA-Ames Research Center, Moffett Field, CA 94035-1000 TEL 650 604-0068 FAX 650 604-0673 [email protected] ABSTRACT This paper presents a review of design concepts over three decades for developing mobile lunar and planetary bases. The idea of the mobile base addresses several key challenges for extraterrestrial surface bases. These challenges include moving the landed assets a safe distance away from the landing zone; deploying and assembling the base remotely by automation and robotics; moving the base from one location of scientific or technical interest to another; and providing sufficient redundancy, reliability and safety for crew roving expeditions. The objective of the mobile base is to make the best use of the landed resources by moving them to where they will be most useful to support the crew, carry out exploration and conduct research. This review covers a range of surface mobility concepts that address the mobility issue in a variety of ways. These concepts include the Rockwell Lunar Sortie Vehicle (1971), Cintala’s Lunar Traverse caravan, 1984, First Lunar Outpost (1992), Frassanito’s Lunar Rover Base (1993), Thangavelu’s Nomad Explorer (1993), Kozlov and Shevchenko’s Mobile Lunar Base (1995), and the most recent evolution, John Mankins’ “Habot” (2000-present). The review compares the several mobile base approaches, then focuses on the Habot approach as the most germane to current and future exploration plans. -
Template for Two-Page Abstracts in Word 97 (PC)
SAMPLE CURATION AT A LUNAR OUTPOST. C. C. Allen 1, G. E. Lofgren1, A. H. Treiman2, and M. L. Lindstrom3 1NASA Johnson Space Center, Houston, TX 77058 USA [email protected] [email protected] 2Lunar and Planetary Institute, Houston, TX 77058 USA [email protected] 3NASA Headquarters, Washing- ton, DC 20546 USA [email protected] Introduction: The six Apollo surface missions re- particularly iron-rich pyroclastic glass and ilmenite- turned 2,196 individual rock and soil samples, with a bearing material. Ice-rich deposits have been pre- total mass of 381.6 kg [1]. Samples were collected dicted in permanently-shadowed locations, and the based on visual examination by the astronauts and con- verification of such deposits is an import goal for lunar sultation with geologists in the science “back room” in exploration. Other volatiles, derived from volcanic Houston. The samples were photographed during col- emissions or implanted by the solar wind, may also lection, packaged in uniquely-identified containers, prove valuable resources. and transported to the Lunar Module. All samples Lunar Outpost Curation Studies: Concepts for collected on the Moon were returned to Earth. the collection of samples at lunar outposts were stud- NASA’s upcoming return to the Moon will be dif- ied intensively in the years following Apollo. The ferent. Astronauts will have extended stays at an out- 1988 “Geoscience at a Lunar Base” workshop [2] care- post and will collect more samples than they will re- fully considered the curation and analysis of samples turn. They will need curation and analysis facilities on on the Moon’s surface. -
Links to Education Standards • Introduction to Exoplanets • Glossary of Terms • Classroom Activities Table of Contents Photo © Michael Malyszko Photo © Michael
an Educator’s Guid E INSIDE • Links to Education Standards • Introduction to Exoplanets • Glossary of Terms • Classroom Activities Table of Contents Photo © Michael Malyszko Photo © Michael For The TeaCher About This Guide .............................................................................................................................................. 4 Connections to Education Standards ................................................................................................... 5 Show Synopsis .................................................................................................................................................. 6 Meet the “Stars” of the Show .................................................................................................................... 8 Introduction to Exoplanets: The Basics .................................................................................................. 9 Delving Deeper: Teaching with the Show ................................................................................................13 Glossary of Terms ..........................................................................................................................................24 Online Learning Tools ..................................................................................................................................26 Exoplanets in the News ..............................................................................................................................27 During -
Project Horizon Report
r-o •-U Volume I SUMMARY AND SUPPORTING CONSIDERATIONS STATES ARMY tiNCLASSllJLD \ CRp/l (s) Proposal to Establish a Lunar Outpost (C) ^bief of Ordnance CRD » -20 Mar 1959 1. CU) Reference letter to Chief of Ordnance from Chief of Research and Development, subject as above. 2. (C) Subsequent to approval by the Chief of Staff of reference, repre sentatives of the Army Ballistic Missiles Agency indicated that supplementary guidance would be required concerning the scope of the preliminary investigation specified in the reference. In particular these representatives requested guidance concerning the source of funds required to conduct the investigation. 3. (S) I envision expeditious development of the proposal to establish a lunar outpost to be of critical importance to the U. S. Army of the future. This evaluation is apparently shared by the Chief of Staff in view of his expeditious approval and enthusiastic endorsement of initiation of the study. Therefore, the detail to be covered by the investigation and the subsequent plan should be as com plete as is feasible in the time limits allowed and within the funds currently available within the office of the Chief of Ordnance. In this time of limited budget, additional monies are unavailable. Current programs have been scrutinized rigidly and identifiable "fat" trimmed away. Thus high study costs are prohibitive at this time. 4. (C) I leave it to your discretion to determine the source and the amount i money to bo devoted to this purpose. Signed ARTHUR G. TRUDEAU Lieutenant General, GS Chief of Research and Developmen Regraded Unclassified . by authority of ~Form DAT5_75 dtd 21 Sep 1961 _ ^ by- Lt. -
Atmospheric Optics
53 Atmospheric Optics Craig F. Bohren Pennsylvania State University, Department of Meteorology, University Park, Pennsylvania, USA Phone: (814) 466-6264; Fax: (814) 865-3663; e-mail: [email protected] Abstract Colors of the sky and colored displays in the sky are mostly a consequence of selective scattering by molecules or particles, absorption usually being irrelevant. Molecular scattering selective by wavelength – incident sunlight of some wavelengths being scattered more than others – but the same in any direction at all wavelengths gives rise to the blue of the sky and the red of sunsets and sunrises. Scattering by particles selective by direction – different in different directions at a given wavelength – gives rise to rainbows, coronas, iridescent clouds, the glory, sun dogs, halos, and other ice-crystal displays. The size distribution of these particles and their shapes determine what is observed, water droplets and ice crystals, for example, resulting in distinct displays. To understand the variation and color and brightness of the sky as well as the brightness of clouds requires coming to grips with multiple scattering: scatterers in an ensemble are illuminated by incident sunlight and by the scattered light from each other. The optical properties of an ensemble are not necessarily those of its individual members. Mirages are a consequence of the spatial variation of coherent scattering (refraction) by air molecules, whereas the green flash owes its existence to both coherent scattering by molecules and incoherent scattering