scholarly journals Exploration in the Solar System with Electric Spacecraft

1971 ◽  
Vol 12 ◽  
pp. 489-501
Author(s):  
Ernst Stuhlinger

The landings of instrumented probes and astronauts on the Moon and the short glimpses at Venus and Mars that distinguished the spaceflight program of the last decade yielded such an impressive wealth of new knowledge that the President, in his programmatic speech of 1970, mentioned the continuing exploration of the solar system as one of the national goals during the decade of the seventies.This exploration will be accomplished with unmanned spacecraft, except for the remaining three Apollo flights in 1971 and 1972 and Skylab in 1973. Planetary exploration will include photographic coverage of the surfaces of the celestial bodies; closeup pictures of specific surface features; magnetic and gravitational measurements; observations of atmospheres, ionospheres, and radiation belts; analysis of surface material in situ; and, as far as possible, the return of surface samples for careful chemical and mineralogical analyses and for age determinations.

2020 ◽  
Author(s):  
Diego De Blasi

<p>Outer space activities are increasingly bringing the international (scientific) community to upper stages of knowledge and awareness. With particular reference to <strong>Lunar exploration</strong>, general involvement of all States (also within a context of public-private partnerships initiatives) towards <strong>the principle of sustainable utilization of lunar resources</strong> shall represent an important requirement for the future of all Mankind</p><p><br>Thus, the <strong>safeguarding of lunar environment</strong> (the equitable/intragenerational utilization of its resources) shall represent a critical issue for the whole evolutionary framework of the <em>Corpus Iuris Spatialis</em></p><p>Firstly, the principle herein shall be taken into examination under the provisions laid down in the A<em>greement governing the Activities of States on the Moon and other Celestial Bodies.</em> Accordingly, article 11 states <em>“the moon and its natural resources are the common heritage of mankind”[..]; as well, “The moon is not subject to national appropriation by any claim of sovereignty, by means of use or occupation, or by any other means..” (paragraph 2)</em></p><p><em> </em><br>Secondly, other concerns may also take into account: a)<strong> the perspective of ISRU (in situ resources utilization) processes</strong>, which shall take place towards sustainability means b) the undertaking of well balanced measures in exploring and using natural resources <em>vis-à-vis</em> adverse changes in lunar environment <em>(article 7, par. 1, Moon Treaty)</em>. In addition, besides the terms pursuant to the establishment of peaceful use of (space) lunar activities, an adequate <em>consensus</em> shall be called upon States beyond the <em>status quo</em></p><p>  <br>In conclusion, the aferomentioned background shall also consider the adoption of a comprehensive <em><strong>Additional Protocol to the Moon Treaty</strong></em> concerning <em>the sustainable utilization of lunar resources</em>. Arguably, this progressive framework may also be welcomed as milestones towards <em>further legal developments in international space law </em></p><p> </p><p> </p>


2015 ◽  
Vol 95 (2) ◽  
pp. 183-189 ◽  
Author(s):  
I.L. ten Kate ◽  
M. Reuver

AbstractHumankind has been interested in space throughout the ages and studies of the universe and our own solar system have been ongoing since the first observations of celestial bodies. In the current era space exploration has provided in situ data for the different bodies in our solar system. To fully comprehend the underlying processes occurring in these bodies, missions and telescope observations are, however, not sufficient and additional modelling studies, both numerical and analogue, are necessary. In this paper we present a new facility specifically designed to experimentally study organic compounds under simulated planetary (sub)surface conditions on rocky bodies in our solar system: PALLAS, the Planetary Analogues Laboratory for Light, Atmosphere, and Surface Simulations. We give an overview of planetary conditions that can be simulated in this facility and that are known to affect organic compounds: radiation, atmospheric composition, temperature and surface composition.


Author(s):  
Ian A. Crawford ◽  
Katherine H. Joy

The lunar geological record contains a rich archive of the history of the inner Solar System, including information relevant to understanding the origin and evolution of the Earth–Moon system, the geological evolution of rocky planets, and our local cosmic environment. This paper provides a brief review of lunar exploration to-date and describes how future exploration initiatives will further advance our understanding of the origin and evolution of the Moon, the Earth–Moon system and of the Solar System more generally. It is concluded that further advances will require the placing of new scientific instruments on, and the return of additional samples from, the lunar surface. Some of these scientific objectives can be achieved robotically, for example by in situ geochemical and geophysical measurements and through carefully targeted sample return missions. However, in the longer term, we argue that lunar science would greatly benefit from renewed human operations on the surface of the Moon, such as would be facilitated by implementing the recently proposed Global Exploration Roadmap.


2020 ◽  
Author(s):  
Elias Roussos ◽  

<p>Jupiter has the most energetic and complex radiation belts in our solar system. Their hazardous environment is the reason why so many spacecraft avoid rather than investigate them, and explains how they have kept many of their secrets so well hidden, despite having been studied for decades. We believe that these secrets are worth unveiling, as Jupiter’s radiation belts and the vast magnetosphere that encloses them constitute an unprecedented physical laboratory, suitable for both interdisciplinary and novel scientific investigations: From studying fundamental high energy plasma physics processes which operate throughout the universe, such as adiabatic charged particle acceleration and nonlinear wave-particle interactions; to exploiting the astrobiological consequences of energetic particle radiation. The in-situ exploration of the uninviting environment of Jupiter’s radiation belts presents us with many challenges in mission design, science planning, instrumentation and technology development. We address these challenges by reviewing the different options that exist for direct and indirect observation of this unique system. We stress the need for new instruments, the value of synergistic Earth and Jupiter-based remote sensing and in-situ investigations, and the vital importance of multi-spacecraft, in-situ measurements. While simultaneous, multi-point in-situ observations have long become the standard for exploring electromagnetic interactions in the inner solar system, they have never taken place at Jupiter or any strongly magnetized planet besides Earth. We conclude that a dedicated multi-spacecraft mission to Jupiter’s radiation belts is an essential and obvious way forward. Besides guaranteeing many discoveries and outstanding progress in our understanding of planetary radiation belts, it offers a number of opportunities for interdisciplinary science investigations. For all these reasons, the exploration of Jupiter’s radiation belts deserves to be given a high priority in the future exploration of our solar system. A White Paper on this subject was submitted in response to ESA's Voyage 2050 call.</p>


Author(s):  
Elias Roussos ◽  
Oliver Allanson ◽  
Nicolas André ◽  
Bruna Bertucci ◽  
Graziella Branduardi-Raymont ◽  
...  

AbstractJupiter has the most complex and energetic radiation belts in our Solar System and one of the most challenging space environments to measure and characterize in-depth. Their hazardous environment is also a reason why so many spacecraft avoid flying directly through their most intense regions, thus explaining how Jupiter’s radiation belts have kept many of their secrets so well hidden, despite having been studied for decades. In this paper we argue why these secrets are worth unveiling. Jupiter’s radiation belts and the vast magnetosphere that encloses them constitute an unprecedented physical laboratory, suitable for interdisciplinary and novel scientific investigations: from studying fundamental high energy plasma physics processes which operate throughout the Universe, such as adiabatic charged particle acceleration and nonlinear wave-particle interactions, to exploiting the astrobiological consequences of energetic particle radiation. The in-situ exploration of the uninviting environment of Jupiter’s radiation belts presents us with many challenges in mission design, science planning, instrumentation, and technology. We address these challenges by reviewing the different options that exist for direct and indirect observations of this unique system. We stress the need for new instruments, the value of synergistic Earth and Jupiter-based remote sensing and in-situ investigations, and the vital importance of multi-spacecraft in-situ measurements. While simultaneous, multi-point in-situ observations have long become the standard for exploring electromagnetic interactions in the inner Solar System, they have never taken place at Jupiter or any strongly magnetized planet besides Earth. We conclude that a dedicated multi-spacecraft mission to Jupiter is an essential and obvious way forward for exploring the planet’s radiation belts. Besides guaranteeing numerous discoveries and huge leaps in our understanding of radiation belt systems, such a mission would also enable us to view Jupiter, its extended magnetosphere, moons, and rings under new light, with great benefits for space, planetary, and astrophysical sciences. For all these reasons, in-situ investigations of Jupiter’s radiation belts deserve to be given a high priority in the future exploration of our Solar System. This article is based on a White Paper submitted in response to the European Space Agency’s call for science themes for its Voyage 2050 programme.


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