The Scramble for Mars (2060) Background Guide Tritonmun Xxi (Virtual) –November 7Th, 2020
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GAME of MOONS a TALE of ICE and FIRE 3 × 50 Min
© NASA SCIENCE GAME OF MOONS A TALE OF ICE AND FIRE 3 × 50 min. Written and produced by Ivo Filatsch 4K, 5.1 and Stereo Executive Producer: Sabine Holzer Join us on a spectacular rollercoaster ride through our solar system! This three-part series explores alien worlds of extremes right in our celestial neighbourhood, each single one amazing, fascinating, and unique in its own way. veryone knows the moon — our Moon … case for Triton. It circles around Neptune in the It may come as a surprise, but there are opposite direction — in a retrograde orbit. more than 200 of these natural satellites But this brings a problem: the laws of physics orbiting other planets in the solar system! dictate that in this situation, Triton is being EAll these moons are incredibly different regarding slowed down all the while, this way getting ever their size, but also in terms of their environments. closer to Neptune. Studying these alien worlds in detail is important. Scientists have calculated that in about 100 Thanks to the insights scientists are getting million years from now, Triton will reach its Roche through observations, measurements, and radius. This is the zone where the gravitational conclusions, we all get a better understanding of forces of Neptune will become too strong to our world as a whole. withstand — and Triton will be ripped apart into pieces … And the better we understand our neighbour- hood, the better we get to know our home planet CHAPTER 2: LIFE … Our moon is much more than just a nice decora- tion in the night sky. -
A Future Mars Environment for Science and Exploration
Planetary Science Vision 2050 Workshop 2017 (LPI Contrib. No. 1989) 8250.pdf A FUTURE MARS ENVIRONMENT FOR SCIENCE AND EXPLORATION. J. L. Green1, J. Hol- lingsworth2, D. Brain3, V. Airapetian4, A. Glocer4, A. Pulkkinen4, C. Dong5 and R. Bamford6 (1NASA HQ, 2ARC, 3U of Colorado, 4GSFC, 5Princeton University, 6Rutherford Appleton Laboratory) Introduction: Today, Mars is an arid and cold world of existing simulation tools that reproduce the physics with a very thin atmosphere that has significant frozen of the processes that model today’s Martian climate. A and underground water resources. The thin atmosphere series of simulations can be used to assess how best to both prevents liquid water from residing permanently largely stop the solar wind stripping of the Martian on its surface and makes it difficult to land missions atmosphere and allow the atmosphere to come to a new since it is not thick enough to completely facilitate a equilibrium. soft landing. In its past, under the influence of a signif- Models hosted at the Coordinated Community icant greenhouse effect, Mars may have had a signifi- Modeling Center (CCMC) are used to simulate a mag- cant water ocean covering perhaps 30% of the northern netic shield, and an artificial magnetosphere, for Mars hemisphere. When Mars lost its protective magneto- by generating a magnetic dipole field at the Mars L1 sphere, three or more billion years ago, the solar wind Lagrange point within an average solar wind environ- was allowed to directly ravish its atmosphere.[1] The ment. The magnetic field will be increased until the lack of a magnetic field, its relatively small mass, and resulting magnetotail of the artificial magnetosphere its atmospheric photochemistry, all would have con- encompasses the entire planet as shown in Figure 1. -
Design of a Human Settlement on Mars Using In-Situ Resources
46th International Conference on Environmental Systems ICES-2016-151 10-14 July 2016, Vienna, Austria Design of a Human Settlement on Mars Using In-Situ Resources Marlies Arnhof1 Vienna University of Technology, Vienna, 1040, Austria Mars provides plenty of raw materials needed to establish a lasting, self-sufficient human colony on its surface. Due to the planet's vast distance from Earth, it is neither possible nor economically reasonable to provide permanent, interplanetary supply. In-situ resource utilization (ISRU) will be necessary to keep the Earth launch burden and mission costs as low as possible, and to provide – apart from propellant and life support – a variety of construction material. However, to include outposts on other planets into the scope of human spaceflight also opens up new psychological and sociological challenges. Crews will live in extreme environments under isolated and confined conditions for much longer periods of time than ever before. Therefore, the design of a Mars habitat requires most careful consideration of physiological as well as psychosocial conditions of living in space. In this design for a Martian settlement, the author proposes that – following preliminary automated exploration – a basic surface base brought from Earth would be set up. Bags of unprocessed Martian regolith would be used to provide additional shielding for the habitat. Once the viability of the base and its production facilities are secured, the settlement would be expanded, using planetary resources. Martian concrete – processed regolith with a polymeric binder – would be used as main in-situ construction material. To provide optimum living and working conditions, the base would respond to the environment and the residents' number and needs, thereby evolving and growing continuously. -
Pluto, Titan, and Triton: How Do Their Haze Properties Compare? B. J. Buratti1, J
51st Lunar and Planetary Science Conference (2020) 1168.pdf Pluto, Titan, and Triton: How do their Haze Properties Compare? B. J. Buratti1, J. D. Hillier2, J. D. Hofgart- ner2, M. D. Hicks1, 1Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109; bon- [email protected]; 2Grays Harbor College, Aberdeen, WA 98520. Introduction: The July 2015 encounter of the New Horizons spacecraft with Pluto brought a large Kuiper Belt Object into sharp focus for the first time [1]. In- struments on the spacecraft observed Pluto at solar phase angles not visible from the Earth, where the max- imum solar phase angle is about 2°. The large solar phase angles (>150°), are especially useful for charac- terizing the properties of Pluto’s haze. But key obser- vations were not made during the encounter because of the fast nature of the flyby. These included the small solar phase angles observable from Earth. Thus, the best data set is one consisting of both spacecraft and ground-based data. We have combined Earth-based observations, in- cluding those from the Palomar Adaptive Optics (AO) system, to construct a complete solar phase curve of Figure 1: Charon and Pluto from the Palomar Pluto. Using the classical radiative transfer model of adaptive optics system. Chandrasekhar’s “Planetary Problem” (2,3) we have fit Data from the spacecraft are summarized in Table physical parameters to the surface and haze of Pluto. 2. Comparison with the properties of Titan’s haze shows Table 1- New Horizons Data used in this Study. that both worlds are factories for producing reddish, organic rich molecules. -
An Economic Analysis of Mars Exploration and Colonization Clayton Knappenberger Depauw University
DePauw University Scholarly and Creative Work from DePauw University Student research Student Work 2015 An Economic Analysis of Mars Exploration and Colonization Clayton Knappenberger DePauw University Follow this and additional works at: http://scholarship.depauw.edu/studentresearch Part of the Economics Commons, and the The unS and the Solar System Commons Recommended Citation Knappenberger, Clayton, "An Economic Analysis of Mars Exploration and Colonization" (2015). Student research. Paper 28. This Thesis is brought to you for free and open access by the Student Work at Scholarly and Creative Work from DePauw University. It has been accepted for inclusion in Student research by an authorized administrator of Scholarly and Creative Work from DePauw University. For more information, please contact [email protected]. An Economic Analysis of Mars Exploration and Colonization Clayton Knappenberger 2015 Sponsored by: Dr. Villinski Committee: Dr. Barreto and Dr. Brown Contents I. Why colonize Mars? ............................................................................................................................ 2 II. Can We Colonize Mars? .................................................................................................................... 11 III. What would it look like? ............................................................................................................... 16 A. National Program ......................................................................................................................... -
Dwarf Planet Ceres
Dwarf Planet Ceres drishtiias.com/printpdf/dwarf-planet-ceres Why in News As per the data collected by NASA’s Dawn spacecraft, dwarf planet Ceres reportedly has salty water underground. Dawn (2007-18) was a mission to the two most massive bodies in the main asteroid belt - Vesta and Ceres. Key Points 1/3 Latest Findings: The scientists have given Ceres the status of an “ocean world” as it has a big reservoir of salty water underneath its frigid surface. This has led to an increased interest of scientists that the dwarf planet was maybe habitable or has the potential to be. Ocean Worlds is a term for ‘Water in the Solar System and Beyond’. The salty water originated in a brine reservoir spread hundreds of miles and about 40 km beneath the surface of the Ceres. Further, there is an evidence that Ceres remains geologically active with cryovolcanism - volcanoes oozing icy material. Instead of molten rock, cryovolcanoes or salty-mud volcanoes release frigid, salty water sometimes mixed with mud. Subsurface Oceans on other Celestial Bodies: Jupiter’s moon Europa, Saturn’s moon Enceladus, Neptune’s moon Triton, and the dwarf planet Pluto. This provides scientists a means to understand the history of the solar system. Ceres: It is the largest object in the asteroid belt between Mars and Jupiter. It was the first member of the asteroid belt to be discovered when Giuseppe Piazzi spotted it in 1801. It is the only dwarf planet located in the inner solar system (includes planets Mercury, Venus, Earth and Mars). Scientists classified it as a dwarf planet in 2006. -
2. Going to Mars
aMARTE A MARS ROADMAP FOR TRAVEL AND EXPLORATION Final Report International Space University Space Studies Program 2016 © International Space University. All Rights Reserved. The 2016 Space Studies Program of the International Space University (ISU) was hosted by the Technion – Israel Institute of Technology in Haifa, Israel. aMARTE has been selected as the name representing the Mars Team Project. This choice was motivated by the dual meaning the term conveys. aMARTE first stands for A Mars Roadmap for Travel and Exploration, the official label the team has adopted for the project. Alternatively, aMARTE can be interpreted from its Spanish roots "amarte," meaning "to love," or can also be viewed as "a Marte," meaning "going to Mars." This play on words represents the mission and spirit of the team, which is to put together a roadmap including various disciplines for a human mission to Mars and demonstrate a profound commitment to Mars exploration. The aMARTE title logo was developed based on sections of the astrological symbols for Earth and Mars. The blue symbol under the team's name represents Earth, and the orange arrow symbol is reminiscent of the characteristic color of Mars. The arrow also serves as an invitation to go beyond the Earth and explore our neighboring planet. Electronic copies of the Final Report and the Executive Summary can be downloaded from the ISU Library website at http://isulibrary.isunet.edu/ International Space University Strasbourg Central Campus Parc d’Innovation 1 rue Jean-Dominique Cassini 67400 Illkirch-Graffenstaden France Tel +33 (0)3 88 65 54 30 Fax +33 (0)3 88 65 54 47 e-mail: [email protected] website: www.isunet.edu I. -
The Solar System Cause Impact Craters
ASTRONOMY 161 Introduction to Solar System Astronomy Class 12 Solar System Survey Monday, February 5 Key Concepts (1) The terrestrial planets are made primarily of rock and metal. (2) The Jovian planets are made primarily of hydrogen and helium. (3) Moons (a.k.a. satellites) orbit the planets; some moons are large. (4) Asteroids, meteoroids, comets, and Kuiper Belt objects orbit the Sun. (5) Collision between objects in the Solar System cause impact craters. Family portrait of the Solar System: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, (Eris, Ceres, Pluto): My Very Excellent Mother Just Served Us Nine (Extra Cheese Pizzas). The Solar System: List of Ingredients Ingredient Percent of total mass Sun 99.8% Jupiter 0.1% other planets 0.05% everything else 0.05% The Sun dominates the Solar System Jupiter dominates the planets Object Mass Object Mass 1) Sun 330,000 2) Jupiter 320 10) Ganymede 0.025 3) Saturn 95 11) Titan 0.023 4) Neptune 17 12) Callisto 0.018 5) Uranus 15 13) Io 0.015 6) Earth 1.0 14) Moon 0.012 7) Venus 0.82 15) Europa 0.008 8) Mars 0.11 16) Triton 0.004 9) Mercury 0.055 17) Pluto 0.002 A few words about the Sun. The Sun is a large sphere of gas (mostly H, He – hydrogen and helium). The Sun shines because it is hot (T = 5,800 K). The Sun remains hot because it is powered by fusion of hydrogen to helium (H-bomb). (1) The terrestrial planets are made primarily of rock and metal. -
18Th EANA Conference European Astrobiology Network Association
18th EANA Conference European Astrobiology Network Association Abstract book 24-28 September 2018 Freie Universität Berlin, Germany Sponsors: Detectability of biosignatures in martian sedimentary systems A. H. Stevens1, A. McDonald2, and C. S. Cockell1 (1) UK Centre for Astrobiology, University of Edinburgh, UK ([email protected]) (2) Bioimaging Facility, School of Engineering, University of Edinburgh, UK Presentation: Tuesday 12:45-13:00 Session: Traces of life, biosignatures, life detection Abstract: Some of the most promising potential sampling sites for astrobiology are the numerous sedimentary areas on Mars such as those explored by MSL. As sedimentary systems have a high relative likelihood to have been habitable in the past and are known on Earth to preserve biosignatures well, the remains of martian sedimentary systems are an attractive target for exploration, for example by sample return caching rovers [1]. To learn how best to look for evidence of life in these environments, we must carefully understand their context. While recent measurements have raised the upper limit for organic carbon measured in martian sediments [2], our exploration to date shows no evidence for a terrestrial-like biosphere on Mars. We used an analogue of a martian mudstone (Y-Mars[3]) to investigate how best to look for biosignatures in martian sedimentary environments. The mudstone was inoculated with a relevant microbial community and cultured over several months under martian conditions to select for the most Mars-relevant microbes. We sequenced the microbial community over a number of transfers to try and understand what types microbes might be expected to exist in these environments and assess whether they might leave behind any specific biosignatures. -
Unsaturated Soils on Mars and Their Impact on Human Missions and Settlement on Mars
Unsaturated soils on Mars and their impact on human missions and settlement on Mars 1 1 Morteza Sheshpari *, Sai Vanapalli 1Department of Civil Engineering, University of Ottawa, Ottawa, ON, Canada, K1N6N5, *Corresponding author: email: [email protected] ABSTRACT Significant recent attention has been garnered by research related to the mechanics of unsaturated soils in the geoscience, geotechnical engineering, and agricultural science. Unsaturated soils are widely distributed in semi-arid and arid regions of the world. The planet Mars, like Earth, is covered with soil originating from erosion and weathering of igneous rocks. The presence of unsaturated soils from recordings of Mars orbiters and landers are discussed in this paper. The importance of these soils and the possible geohazards that they may pose for future human exploration or colonization of Mars are presented too. In conclusion, unsaturated soils appear to exist on a large scale on Mars and can contribute to geotechnical problems similar to those on Earth. We will discover valuable information about the potential problems, and hence possible solutions, for planning human activities on Mars in future. KEYWORDS: Mars, unsaturated soils, suction, duricrust, debris flow, collapsible soils, geotechnical hazards, human settlement INTRODUCTION There are plans by different authorities to have humans on Mars for exploration purposes and also for possible settlement. Main ongoing projects with regards to these plans are the Mars One project and a new proposal from NASA (1, 2).There are however several geotechnical engineering challenges that have to be addressed for success of the proposed future human projects on Mars. Geotechnical problems associated with soils on Earth located above the ground water table, (i.e. -
Martian Ice How One Neutrino Changed Astrophysics Remembering Two Former League Presidents
Published by the Astronomical League Vol. 71, No. 3 June 2019 MARTIAN ICE HOW ONE NEUTRINO 7.20.69 CHANGED ASTROPHYSICS 5YEARS REMEMBERING TWO APOLLO 11 FORMER LEAGUE PRESIDENTS ONOMY T STR O T A H G E N P I E G O Contents N P I L R E B 4 . President’s Corner ASTRONOMY DAY Join a Tour This Year! 4 . All Things Astronomical 6 . Full Steam Ahead OCTOBER 5, From 37,000 feet above the Pacific Total Eclipse Flight: Chile 7 . Night Sky Network 2019 Ocean, you’ll be high above any clouds, July 2, 2019 For a FREE 76-page Astronomy seeing up to 3¼ minutes of totality in a PAGE 4 9 . Wanderers in the Neighborhood dark sky that makes the Sun’s corona look Day Handbook full of ideas and incredibly dramatic. Our flight will de- 10 . Deep Sky Objects suggestions, go to: part from and return to Santiago, Chile. skyandtelescope.com/2019eclipseflight www.astroleague.org Click 12 . International Dark-Sky Association on "Astronomy Day” Scroll 14 . Fire & Ice: How One Neutrino down to "Free Astronomy Day African Stargazing Safari Join astronomer Stephen James ̃̃̃Changed a Field Handbook" O’Meara in wildlife-rich Botswana July 29–August 4, 2019 for evening stargazing and daytime PAGE 14 18 . Remembering Two Former For more information, contact: safari drives at three luxury field ̃̃̃Astronomical League Presidents Gary Tomlinson camps. Only 16 spaces available! Astronomy Day Coordinator Optional extension to Victoria Falls. 21 . Coming Events [email protected] skyandtelescope.com/botswana2019 22 . Gallery—Moon Shots 25 . Observing Awards Iceland Aurorae September 26–October 2, 2019 26 . -
1 on the Origin of the Pluto System Robin M. Canup Southwest Research Institute Kaitlin M. Kratter University of Arizona Marc Ne
On the Origin of the Pluto System Robin M. Canup Southwest Research Institute Kaitlin M. Kratter University of Arizona Marc Neveu NASA Goddard Space Flight Center / University of Maryland The goal of this chapter is to review hypotheses for the origin of the Pluto system in light of observational constraints that have been considerably refined over the 85-year interval between the discovery of Pluto and its exploration by spacecraft. We focus on the giant impact hypothesis currently understood as the likeliest origin for the Pluto-Charon binary, and devote particular attention to new models of planet formation and migration in the outer Solar System. We discuss the origins conundrum posed by the system’s four small moons. We also elaborate on implications of these scenarios for the dynamical environment of the early transneptunian disk, the likelihood of finding a Pluto collisional family, and the origin of other binary systems in the Kuiper belt. Finally, we highlight outstanding open issues regarding the origin of the Pluto system and suggest areas of future progress. 1. INTRODUCTION For six decades following its discovery, Pluto was the only known Sun-orbiting world in the dynamical vicinity of Neptune. An early origin concept postulated that Neptune originally had two large moons – Pluto and Neptune’s current moon, Triton – and that a dynamical event had both reversed the sense of Triton’s orbit relative to Neptune’s rotation and ejected Pluto onto its current heliocentric orbit (Lyttleton, 1936). This scenario remained in contention following the discovery of Charon, as it was then established that Pluto’s mass was similar to that of a large giant planet moon (Christy and Harrington, 1978).