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China's Touch on the Moon
commentary China’s touch on the Moon Long Xiao As well as being a milestone in technology, the Chang’e lunar exploration programme establishes China as a contributor to space science. With much still to learn about the Moon, fieldwork beyond Earth’s orbit must be an international effort. hen China’s Chang’e 3 spacecraft geological history of the landing site. touched down on the lunar High-resolution images have shown rocky Wsurface on 14 December 2013, terrain with outcrops of porphyritic basalt, it was the first soft landing on the Moon such as Loong Rock (Fig. 2). Analysis since the Soviet Union’s Luna 24 mission of data collected by the penetrating in 1976. Following on from the decades- Chang’e 3 radar should lead to identification of the old triumphs of the Luna missions and underlying layers of regolith, impact breccia NASA’s Apollo programme, the Chang’e and basalt. lunar exploration programme is leading the China’s robotic field geologist Yutu has charge of a new generation of exploration Basalt outcrop Yutu rover stalled in its traverse of the lunar surface, on the lunar surface. Much like the earlier but plans for the Chang’e 5 sample-return space programmes, the China National mission are moving forward. The primary Space Administration (CNSA) has been objective of the mission will be to return developing its capabilities and technologies 100 m 2 kg of samples from the surface and depths step by step in a series of Chang’e missions UNIVERSITY STATE © NASA/GSFC/ARIZONA of up to 2 m, probably also in the relatively of increasing ambition: orbiting and Figure 1 | The Chinese Chang’e 3 spacecraft and smooth northern Mare Imbrium. -
Planetary Report Report
The PLANETARYPLANETARY REPORT REPORT Volume XXV Number 5 September/October 2005 ATACAMA DESERT MarsMars AnalogsAnalogs VALLES MARINERIS Volume XXV Table of Number 5 Contents September/October 2005 A PUBLICATION OF Features From The Dry Earth, Wet Mars 6 Sometimes the best place to learn about Mars exploration is right here on Editor Earth. In Chile’s Atacama Desert, scientists have discovered an area so dry that organic material, and therefore evidence of life, is virtually undetectable. Study of he damage that Earth inflicts on her this parched Mars-like region on Earth may lead us to a better understanding of Tinhabitants—horribly demonstrated how to search for water and the elements of life in Martian soil. This year, The by Hurricane Katrina and the December Planetary Society cosponsored a field expedition to the Atacama Desert, sending tsunami—reminds us what fragile creatures graduate student Troy Hudson on a 1-week adventure with a team of scientists led we are, lucky to survive at all on this dynamic, by Society Board member Chris McKay. Here, Troy describes his experience. dispassionate ball of rock hurtling through space. 12 The Pioneer Anomaly: A Deep Space Mystery Our exploration of other worlds has As Pioneer 10 and 11 head toward the farthest reaches of our solar system, taught us that the potential for planetary something strange is happening—they are mysteriously slowing down. Scientists catastrophe is always with us. On Mars, do not yet know why the spacecraft aren’t acting as expected; however, The we’ve seen planet-rending gouges cut by Planetary Society has stepped in to help fund the effort to analyze roughly 25 years catastrophic floods. -
Highlights in Space 2010
International Astronautical Federation Committee on Space Research International Institute of Space Law 94 bis, Avenue de Suffren c/o CNES 94 bis, Avenue de Suffren UNITED NATIONS 75015 Paris, France 2 place Maurice Quentin 75015 Paris, France Tel: +33 1 45 67 42 60 Fax: +33 1 42 73 21 20 Tel. + 33 1 44 76 75 10 E-mail: : [email protected] E-mail: [email protected] Fax. + 33 1 44 76 74 37 URL: www.iislweb.com OFFICE FOR OUTER SPACE AFFAIRS URL: www.iafastro.com E-mail: [email protected] URL : http://cosparhq.cnes.fr Highlights in Space 2010 Prepared in cooperation with the International Astronautical Federation, the Committee on Space Research and the International Institute of Space Law The United Nations Office for Outer Space Affairs is responsible for promoting international cooperation in the peaceful uses of outer space and assisting developing countries in using space science and technology. United Nations Office for Outer Space Affairs P. O. Box 500, 1400 Vienna, Austria Tel: (+43-1) 26060-4950 Fax: (+43-1) 26060-5830 E-mail: [email protected] URL: www.unoosa.org United Nations publication Printed in Austria USD 15 Sales No. E.11.I.3 ISBN 978-92-1-101236-1 ST/SPACE/57 *1180239* V.11-80239—January 2011—775 UNITED NATIONS OFFICE FOR OUTER SPACE AFFAIRS UNITED NATIONS OFFICE AT VIENNA Highlights in Space 2010 Prepared in cooperation with the International Astronautical Federation, the Committee on Space Research and the International Institute of Space Law Progress in space science, technology and applications, international cooperation and space law UNITED NATIONS New York, 2011 UniTEd NationS PUblication Sales no. -
Leveraging Public Data to Reconstruct the Cost History of Planetary Exploration
Leveraging Public Data to Reconstruct the Cost History of Planetary Exploration Casey Dreier Senior Space Policy Adviser The Planetary Society Motivations MSL Curiosity Press Kit: • Publicly-reported mission costs are inconsistent and lack detail • Comparisons are difficult between missions and over time Perseverance Press Kit: • A problem for both public education and advocates: • Press kit numbers are what gets reported! • How much “should” a mission cost? Voyager Press Kit: • How to interpret the total cost—is a $1B mission “expensive” or “a good deal”? • How much is a mission in the context of all planetary spending? Or all of NASA spending? Juno Press Kit: • How much of a mission cost are development, launch, and operations? What does it cost to explore the planets? Project Goals vs • Compile a complete record of mission and program costs for NASA’s robotic planetary program using public data. • Useful for public and public policy discourse: • Normalized to include accounting changes • Include all mission costs: development, launch, and all operations • Inflation-adjusted values • Provide costs by year • Easily and freely accessible Method • Primary source: NASA budget estimates provided by NASA HQ History Office • Used “actual” reported obligations • Augmented by a variety of secondary sources, in order of preference: • Official NASA statements (press releases, public briefings) • Projected values in PBRs • Reporting from high-quality news agencies • Normalizations (“gap fill” strategy): • Include all LV costs, except STS • Removed -
In-Flight Validation of Akatsuki X-Band Deep Space Telecommunication Technologies
Trans. JSASS Aerospace Tech. Japan Vol. 10, No. ists28, pp. To_3_7-To_3_12, 2012 Topics In-FlightIn-Flight Validation Validation of Akatsuki of Akatsuki X-Band X-Band Deep SpaceDeep SpaceTelecommu- Telecommunicationnication Technologies Technologies By Tomoaki TODA and Nobuaki ISHII Japan Aerospace Exploration Agency, Institute of Space and Astronautical Science, Sagamihara, Japan (Received June 24th, 2011) Akatsuki is the Japanese first Venus exploration program. The spacecraft was successfully launched in May 21st 2010 from Tanegashima Space Center via H II-A vehicle. One of her missions is a flight demonstration of her telecommunication system developed for supporting Japanese future deep space missions. During her half-year cruising phase heading for Venus, we had conducted checkouts of the system. The key technologies are a deep space transponder, a set of onboard antennas, and power amplifiers. They all were newly introduced into Akatsuki. Their performances had been tested through the half-year operations and been investigated by using collective data obtained in the experiments. Our regenerative ranging was also demonstrated in these activities. We proved that the newly introduced telecommunication system worked exactly as we had designed and that the system performances were the same as evaluated on the ground. In this paper, we will summarize these in-flight validations for the Akatsuki telecommunication system. Key Words: Akatsuki, PLANET-C, Deep Space Telecommunications, Regenerative Ranging 1. Introduction block diagram of Akatsuki. The redundancy is given to TRPs and 10 W solid-state power amplifiers (SSPAs). The TWTA is Akatsuki is the Venus exploration program of Japan Aero- provided for the increase of scientific data acquisition. -
PAC March 9 10 2020 Report
NASA ADVISORY COUNCIL PLANETARY SCIENCE ADVISORY COMMITTEE March 9-10, 2020 NASA Headquarters Washington, DC MEETING REPORT _____________________________________________________________ Anne Verbiscer, Chair ____________________________________________________________ Stephen Rinehart, Executive Secretary Table of Contents Opening and Announcements, Introductions 3 PSD Update and Status 3 PSD R&A Status 5 Planetary Protection 7 Discussion 8 Mars Exploration Program 8 Lunar Exploration Program 9 PDCO 11 Planetary Data System 12 PDS at Headquarters 13 Findings and Discussion 13 General Comments 13 Exoplanets in Our Backyard 14 AP Assets for Solar System Observations 15 Solar System Science with JWST 16 Mercury Group 17 VEXAG 17 SBAG 18 OPAG 19 MEPAG 19 MAPSIT 20 LEAG 21 CAPTEM 21 Discussion 22 Findings and Recommendations Discussion 23 Appendix A- Attendees Appendix B- Membership roster Appendix C- Agenda Appendix D- Presentations Prepared by Joan M. Zimmermann Zantech, Inc. 2 Opening, Announcements, Around the Table Identification Executive Secretary of the Planetary Science Advisory Committee (PAC), Dr. Stephen Rinehart, opened the meeting and made administrative announcements. PAC Chair, Dr. Anne Verbiscer, welcomed everyone to the virtual meeting. Announcements were made around the table and on Webex. PSD Status Report Dr. Lori Glaze, Director of the Planetary Science Division, gave a status report. First addressing the President’s Budget Request (PBR) for Fiscal Year 2021 (FY21) for the Science Mission Directorate (SMD), Dr. Glaze noted that it was one of the strongest science budgets in NASA history, representing a 12% increase over the enacted FY20 budget. The total PBR keeps NASA on track to land on the Moon by 2024; and to help prepare for human exploration at Mars. -
The Planetary Report
!-' Volume XIX Number 6 November/December 1999 Volume XIX On the Cover: The spring eq uinox for Mars' sou thern hemisphere arrived Table of Number 6 August 2, 1999, br in gi ng in the warm seasons of the yea r. The frosts of the southern polar cap began to retreat. As summer Contents Novem ber/December 1999 approached, so did the Mars Polar Lander (MPL), scheduled to touch down near the edge of the frost cap on December 3. What will MPL fi nd? We don't know yet, but the lander may encounter dust storms, which freque ntly blow in th is regio n. In this image, take n in late July, we see grayish-orange du st Features clouds just above the frost cap at the lower left. Image: Malin Space Science Systems/NASA 4 An Intervievv With Tim Ferris Does life exist on other worlds? How do we find it? Ifwe find it, how do we study or communicate with it? Science writer Tim Ferris addresses these questions in a new Public Broadcasting System television series about the possibility of extraterrestrial life, He shares some of hi s thoughts with The Planetary Report. Froln Over One Million Served: The 5 SETI@home Passes the Million Mark SETI@home is definitely the biggest research project The Planetary Society has ever been Editor involved with-and it just keeps getting bigger. Have you joined yet? t's hard to explore planets, really hard. 6 Assessing the Hazard: Those of us of a certain age remember The Development of the Torino Scale I How do you convey the approximate degree of danger posed by a passing asteroid to someone John F. -
NASA and Planetary Exploration
**EU5 Chap 2(263-300) 2/20/03 1:16 PM Page 263 Chapter Two NASA and Planetary Exploration by Amy Paige Snyder Prelude to NASA’s Planetary Exploration Program Four and a half billion years ago, a rotating cloud of gaseous and dusty material on the fringes of the Milky Way galaxy flattened into a disk, forming a star from the inner- most matter. Collisions among dust particles orbiting the newly-formed star, which humans call the Sun, formed kilometer-sized bodies called planetesimals which in turn aggregated to form the present-day planets.1 On the third planet from the Sun, several billions of years of evolution gave rise to a species of living beings equipped with the intel- lectual capacity to speculate about the nature of the heavens above them. Long before the era of interplanetary travel using robotic spacecraft, Greeks observing the night skies with their eyes alone noticed that five objects above failed to move with the other pinpoints of light, and thus named them planets, for “wan- derers.”2 For the next six thousand years, humans living in regions of the Mediterranean and Europe strove to make sense of the physical characteristics of the enigmatic planets.3 Building on the work of the Babylonians, Chaldeans, and Hellenistic Greeks who had developed mathematical methods to predict planetary motion, Claudius Ptolemy of Alexandria put forth a theory in the second century A.D. that the planets moved in small circles, or epicycles, around a larger circle centered on Earth.4 Only partially explaining the planets’ motions, this theory dominated until Nicolaus Copernicus of present-day Poland became dissatisfied with the inadequacies of epicycle theory in the mid-sixteenth century; a more logical explanation of the observed motions, he found, was to consider the Sun the pivot of planetary orbits.5 1. -
The Heliogyro Reloaded
THE HELIOGYRO RELOADED W. K. Wilkie, J. E. Warren Structural Dynamics Branch NASA Langley Research Center Hampton, VA M. W. Thomson, P. D. Lisman, P. E. Walkemeyer Jet Propulsion Laboratory California Institute of Technology Pasadena, CA D. V. Guerrant, D. A. Lawrence Department of Aerospace Engineering Sciences University of Colorado Boulder, CO ABSTRACT The heliogyro is a high-performance, spinning solar sail architecture that uses long - order of kilometers - reflective membrane strips to produce thrust from solar radiation pressure. The heliogyro’s membrane “blades” spin about a central hub and are stiffened by centrifugal forces only, making the design exceedingly light weight. Blades are also stowed and deployed from rolls; eliminating deployment and packaging problems associated with handling extremely large, and delicate, membrane sheets used with most traditional square-rigged or spinning disk solar sail designs. The heliogyro solar sail concept was first advanced in the 1960s by MacNeal. A 15 km diameter version was later extensively studied in the 1970s by JPL for an ambitious Comet Halley rendezvous mission, but ultimately not selected due to the need for a risk-reduction flight demonstration. Demonstrating system-level feasibility of a large, spinning heliogyro solar sail on the ground is impossible; however, recent advances in microsatellite bus technologies, coupled with the successful flight demonstration of reflectance control technologies on the JAXA IKAROS solar sail, now make an affordable, small-scale heliogyro technology flight demonstration potentially feasible. In this paper, we will present an overview of the history of the heliogyro solar sail concept, with particular attention paid to the MIT 200-meter-diameter heliogyro study of 1989, followed by a description of our updated, low-cost, heliogyro flight demonstration concept. -
Carl Sagan 1934–1996
Carl Sagan 1934–1996 A Biographical Memoir by David Morrison ©2014 National Academy of Sciences. Any opinions expressed in this memoir are those of the author and do not necessarily reflect the views of the National Academy of Sciences. CARL SAGAN November 9, 1934–December 20, 1996 Awarded 1994 NAS Pubic Welfare Medal Carl Edward Sagan was a founder of the modern disci- plines of planetary science and exobiology (which studies the potential habitability of extraterrestrial environments for living things), and he was a brilliant educator who was able to inspire public interest in science. A visionary and a committed defender of rational scientific thinking, he transcended the usual categories of academia to become one of the world’s best-known scientists and a true celebrity. NASA Photo Courtesy of Sagan was propelled in his careers by a wealth of talent, By David Morrison a large share of good luck, and an intensely focused drive to succeed. His lifelong quests were to understand our plane- tary system, to search for life beyond Earth, and to communicate the thrill of scientific discovery to others. As an advisor to the National Aeronautics and Space Administration (NASA) and a member of the science teams for the Mariner, Viking, Voyager, and Galileo missions, he was a major player in the scientific exploration of the solar system. He was also a highly popular teacher, but his influence reached far beyond the classroom through his vivid popular writing and his mastery of the medium of television. The early years Born in 1934, Sagan grew up in a workingclass Jewish neighborhood of Brooklyn, New York, and attended public schools there and in Rahway, New Jersey. -
The Planetary Report
Board of Directors CARL SAGAN BRUCE MURRAY President Vice President Where Next for The Planetary Society? Director, Laboratory Professor of for Planetary Studies, Planetary Science, by Bruce Murray Cornell University California Institute LOUIS FRIEDMAN of Technology Dr. Bruce Murray, Vice President of The Planetary Society, spoke at the Society's commemoration of Executive Director HENRY TANNER JOSEPH RYAN Assistant Treasurer, the flight of Mariner 2, the first spacecraft to encounter another planet, held last December in o 'Melveny & Myers California Institute Washington, DC The following remarks have been taken from his address: ofT echnology Board of Advisors The first exploration of Venus by Mariner 2 was important enough to warrant our gathering here in DIANE ACKERMAN SHIRLEY M . HUFSTEDLER ~ Washington twenty years later to commemorate it. The Planetary Society exists to continue that kind poet and author educator and jurist of human achievement into the future. Tonight I would like to talk briefly about the present status of the ISAAC ASIMoV JAMES MICHENER Society and to convey some thoughts on its future direction. author author What is The Planetary Society? You read about it in The Planetary Report, but really, what is it? RICHARD BERENoZEN PHILIP MORRISON Well, to me, it is foremost an intercommunicating network of diverse individuals who are bound President. Institute Professor, American University Massachusetts together by a powerful unifying belief: that reaching out to explore our solar system and other solar Institute of Technology JACQUES BLAMoNT systems in search of our analogs is a good thing to do. Chief Scientist, PAUL NEWMAN People come to that belief in many ways. -
The Planetary Report
The Volume XVII 01) the Cover: "Fantastically weird" slipped out as geologist Jim Head Table of Number 2 described the latest Galileo images of Euro~a. Thi ~ is one March/April1997 of the most enigmatic worlds yet seen by spacecraft, and Contents the closer we look, the stranger it gets. It may possess an ocean beneath a water-ice crust, perhaps hiding a potential habitat for life. Here we show the moon as it appeared from 677,000 ki lometers (420,000 miles) away last September during Galileo's flyby of Gany mede. At left is a false-color Features image, with contrasts enhanced to bring out compositional Waltzing by Mathilde: differences in the primarily ice crust. At right is a natural 4 NEAR's First Asteroid Encounter color image, showing Europa as it might appear to an Asteroids aren't the most glamorous objects in the solar system, but they contain crucial observer riding the spacecraft. Images: JPUNASA clues to the origin and evolution of our planetary family. Plus, those that pass through Earth 's neighborhood pose a distinct threat to the future evolution of some life-forms on this planet. On its way to explore the tiny world Eros, the Near-Earth Asteroid Rendezvous spacecraft is preparing to encounter another small object with great potential, Mathilde. Froln 9 Farevvell, Pioneer The The Voyagers' flights through the outer solar system may have been more thrilling, and the CaWeo mission to the Jupiter system will produce more data, but both these missions Editor depended for their success on the first spacecraft to blaze a trail to the outer solar system: Pioneer 10.