Results 41 to 50 of about 382,874 (135)

Planetary Radio Interferometry and Doppler Experiment (PRIDE) Technique: a Test Case of the Mars Express Phobos Fly-by. 2. Doppler tracking: Formulation of observed and computed values, and noise budget [PDF]

open access: yes, 2017
Context. Closed-loop Doppler data obtained by deep space tracking networks (e.g., NASA's DSN and ESA's Estrack) are routinely used for navigation and science applications.
Bocanegra-Bahamón, T. M.   +7 more
core   +3 more sources

Dry Downhill Particle Motion on Mars

open access: yesThe Planetary Science Journal
We recently flew a new setup on parabolic flights for the first time to study particle motion on Martian slopes under Martian gravity. Here, we describe the initial experiments. We used dust/sand beds at varying ambient pressure of a few hundred pascals.
Tetyana Bila   +4 more
doaj   +1 more source

PMODE I: Design and Development of an Observatory for Characterizing Giant Planet Atmospheres and Interiors

open access: yesFrontiers in Astronomy and Space Sciences, 2022
The giant planets of our Solar System are exotic laboratories, enshrouding keys which can be used to decipher planetary formation mysteries beneath their cloudy veils.
Cody L. Shaw   +5 more
doaj   +1 more source

Astrometry and Exoplanets: the Gaia Era, and Beyond

open access: yes, 2010
The wealth of information in the Gaia catalogue of exoplanets will constitute a fundamental contribution to several hot topics of the astrophysics of planetary systems. I briefly review the potential impact of Gaia micro-arsec astrometry in several areas
A. Sozzetti   +9 more
core   +1 more source

Long Period Seismology on Titan in the Presence of a Methane Clathrate Lid

open access: yesEarth and Space Science
Previous 1‐D spherically symmetric seismic modeling studies have shown that in the presence of a clathrate lid on Titan significant thermal profile differences result, particularly in comparison to a pure water ice shell.
Andrea S. Bryant   +2 more
doaj   +1 more source

Attitudes towards Autonomous Data Collection and Analysis in the Planetary Science Community

open access: yesGalaxies, 2013
As missions are planned to targets further away from Earth, it becomes all but required to increase the role of autonomy in the mission. An investigation of what aspects of mission operations and decision making autonomy will be accepted in by the ...
Jeremy Straub
doaj   +1 more source

Resonant periodic orbits in the exoplanetary systems

open access: yes, 2013
The planetary dynamics of $4/3$, $3/2$, $5/2$, $3/1$ and $4/1$ mean motion resonances is studied by using the model of the general three body problem in a rotating frame and by determining families of periodic orbits for each resonance.
Antoniadou, K. I., Voyatzis, G.
core   +1 more source

The Vulcan Mission to Io: Lessons Learned during the 2022 JPL Planetary Science Summer School

open access: yesThe Planetary Science Journal
A mission to Jupiter's moon Io, the most volcanically active body in the solar system, was suggested as a priority for the New Frontiers program in the 2013 Planetary Science Decadal Survey.
K. G. Hanley   +20 more
doaj   +1 more source

The Habitable Zone Gallery [PDF]

open access: yes, 2012
The Habitable Zone Gallery (www.hzgallery.org) is a new service to the exoplanet community which provides Habitable Zone (HZ) information for each of the exoplanetary systems with known planetary orbital parameters.
Dawn M. Gelino   +2 more
core   +3 more sources

Planetary science [PDF]

open access: yes
The following types of experiments for a proposed Space Station Microgravity Particle Research Facility are described: (1) low velocity collisions between fragile particles; (2) low velocity collisions of ice particles; (3) plasma-dust interaction; and ...
Bridges, Frank   +6 more
core   +1 more source

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