scholarly journals Venus Orbital Mission Concept: Kythiran Eolian dYnamics from the Surface to the Thermosphere from an Orbital NEtwork (KEYSTONE)

2021 ◽  
Vol 53 (4) ◽  
Author(s):  
Kevin McGouldrick ◽  
Giada Arney ◽  
Amanda Brecht ◽  
Anthony Colaprete ◽  
Shannon Curry ◽  
...  
Keyword(s):  
Orbital Mission

scholarly journals Venus: key to understanding the evolution of terrestrial planets

2021 ◽  
Author(s):  
Colin F. Wilson ◽  
Thomas Widemann ◽  
Richard Ghail
Keyword(s):  
High Temperature ◽  
High Resolution ◽  
Radar Imaging ◽  
Space Science ◽  
Interior Surface ◽  
Extended Surface ◽  
Earth Like Planets ◽  
Orbital Mission

AbstractIn this paper, originally submitted in answer to ESA’s “Voyage 2050” call to shape the agency’s space science missions in the 2035–2050 timeframe, we emphasize the importance of a Venus exploration programme for the wider goal of understanding the diversity and evolution of habitable planets. Comparing the interior, surface, and atmosphere evolution of Earth, Mars, and Venus is essential to understanding what processes determined habitability of our own planet and Earth-like planets everywhere. This is particularly true in an era where we expect thousands, and then millions, of terrestrial exoplanets to be discovered. Earth and Mars have already dedicated exploration programmes, but our understanding of Venus, particularly of its geology and its history, lags behind. Multiple exploration vehicles will be needed to characterize Venus’ richly varied interior, surface, atmosphere and magnetosphere environments. Between now and 2050 we recommend that ESA launch at least two M-class missions to Venus (in order of priority): a geophysics-focussed orbiter (the currently proposed M5 EnVision orbiter – [1] – or equivalent); and an in situ atmospheric mission (such as the M3 EVE balloon mission – [2]). An in situ and orbital mission could be combined in a single L-class mission, as was argued in responses to the call for L2/L3 themes [3–5]. After these two missions, further priorities include a surface lander demonstrating the high-temperature technologies needed for extended surface missions; and/or a further orbiter with follow-up high-resolution surface radar imaging, and atmospheric and/or ionospheric investigations.

scholarly journals High-resolution mapping of lunar polar hydrogen with a low-resource orbital mission

2015 ◽  
Vol 115 ◽  
pp. 452-462 ◽  
Author(s):  
David J. Lawrence ◽  
Richard S. Miller ◽  
Martin T. Ozimek ◽  
Patrick N. Peplowski ◽  
Christopher J. Scott
Keyword(s):  
High Resolution ◽  
Low Resource ◽  
High Resolution Mapping ◽  
Resolution Mapping ◽  
Orbital Mission

Mineral and nitrogen balance study: Results of metabolic observations on Skylab II 28-day orbital mission

1975 ◽  
Vol 2 (3-4) ◽  
pp. 297-309 ◽  
Author(s):  
G.D. Whedon ◽  
L. Lutwak ◽  
J. Reid ◽  
P. Rambaut ◽  
M. Whittle ◽  
...  
Keyword(s):  
Nitrogen Balance ◽  
Balance Study ◽  
Study Results ◽  
Orbital Mission

scholarly journals The science case for an orbital mission to Uranus: Exploring the origins and evolution of ice giant planets

2014 ◽  
Vol 104 ◽  
pp. 122-140 ◽  
Author(s):  
C.S. Arridge ◽  
N. Achilleos ◽  
J. Agarwal ◽  
C.B. Agnor ◽  
R. Ambrosi ◽  
...  
Keyword(s):  
Giant Planets ◽  
Orbital Mission

The KySat Space Express Sub-Orbital Mission Summary

2008 ◽  
Author(s):  
Tyler J. Doering ◽  
Samuel F. Hishmeh ◽  
Thomas L. Dodson ◽  
Amber-Rose White ◽  
Prabhakara R. Eluru ◽  
...  
Keyword(s):  
Orbital Mission

Determination of magnetopause and bow shock shape based on convolutional neural network modelling of MESSENGER data

2021 ◽  
Author(s):  
Alexander Lavrukhin ◽  
David Parunakian ◽  
Dmitry Nevsky ◽  
Sahib Julka ◽  
Michael Granitzer ◽  
...  
Keyword(s):  
Neural Network ◽  
Three Dimensional ◽  
Bow Shock ◽  
Network Modelling ◽  
Machine Learning Methods ◽  
Magnetometer Data ◽  
Spacecraft Mission ◽  
Planetary Magnetic Field ◽  
Orbital Mission

<p><span id="E87">The magnetosphere of Mercury is relatively small and highly dynamic, mostly due to the weak planetary magnetic field. Varying solar wind conditions principally determine the location of both the </span><span id="E89">Hermean</span><span id="E91"> bow shock and magnetopause. In 2011 – 2015 MESSENGER spacecraft completed over 4000 orbits around Mercury, thus giving a data of more than 8000 crossings of bow shock and magnetopause of the planet, this makes it possible to study in detail the bow shock, the magnetopause and the </span><span id="E93">magnetosheath</span><span id="E95"> structures.</span></p> <p>In this work we determine crossings of the bow shock and the magnetopause of Mercury by applying machine learning methods to the MESSENGER magnetometer data. We attempt to identify the crossings during the whole duration of the orbital mission and model the average three-dimensional shapes of these boundaries. The results are compared with those previously obtained in other works.</p> <p><span id="E101">This work may be of interest for future Mercury research related to the </span><span id="E103">BepiColombo</span><span id="E105"> spacecraft mission, which will enter the orbit around the planet in December 2025.</span></p>

Microgravity Vestibular Investigations: Perception of Self-Orientation and Self-Motion

1997 ◽  
Vol 7 (6) ◽  
pp. 453-457
Author(s):  
Alan J. Benson ◽  
Fred E. Guedry ◽  
Donald E. Parker ◽  
Millard F. Reschke
Keyword(s):  
Constant Velocity ◽  
Sensory Information ◽  
Whole Body ◽  
Body Rotation ◽  
Dependent Vector ◽  
Perception Of Self ◽  
Axis Rotation ◽  
Otolith System ◽  
Self Motion ◽  
Orbital Mission

Four astronauts experienced passive whole-body rotation in a number of test sessions during a 7-day orbital mission. Pitch (Y-axis) and roll (X-axis) rotation required subject orientations on the rotator in which the otolith system was at radius of 0.5 m. Thus subjects experienced a constant -0.22 Gz stimulus to the otoliths during the 60 s constant-velocity segments of “pitch” and “roll” ramp profiles. The Gz stimulus, a radius-dependent vector ranging from -0.22 Gz at the otoliths to +0.36 Gz at the feet, generated sensory information that was not interpreted as inversion in any of the 16 tests carried out in flight (12 in pitch and 4 in roll orientation). None of the subjects was rotated with head off-center during the first 33 h of the mission. In the state of orbital adaptation of these subjects, a -0.22 Gz otolith stimulus did not provide a vertical reference in the presence of a gradient of -Gz stimuli to the trunk and legs.

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