Results 31 to 40 of about 1,655 (241)

The θBn problem: Determination of local magnetic parameters of interplanetary shocks from in situ IMF data [PDF]

open access: yesGeofísica Internacional, 2001
The angle θBn is the angle between the upstream magnetic field and the shock normal direction and is important for many phenomena in interplanetary physics.
Andre Balogh   +1 more
doaj  

Interplanetary frontiers: terraforming from an invasion science perspective

open access: yesOikos, EarlyView.
The pursuit of a multi‐planetary existence represents one of humanity's greatest frontiers. If applied justly, it offers an opportunity to extend its civilization's lifespan amid escalating sustainability crises on Earth. One approach increasingly gaining traction is terraforming, a hitherto theoretical ecological and evolutionary experiment revolving ...
Teun Everts   +2 more
wiley   +1 more source

Spectral Properties of Suprathermal Protons Associated with Interplanetary Shocks from WIND/STICS Data

open access: yesThe Astrophysical Journal
Here are analyzed 3D velocity distribution functions (VDFs) of protons in the suprathermal energy-per-charge ( E / Q ) domain of 6.2 to 223.1 keV/e, as observed by the WIND Suprathermal Ion Composition Spectrometer (WIND/STICS) between 1995 and 2019 ...
Johann Rubens Mejia-Ott, Brent M. Randol
doaj   +1 more source

The plasma-solid transition: some implications in astrophysics [PDF]

open access: yesSerbian Astronomical Journal, 2002
Using a criterion proposed by Salpeter and standard solid-state physics, we have determined the Debye temperature of a solid in equilibrium with the electron gas surrounding it.
Čelebonović Vladan A., Dappen W.
doaj   +1 more source

From Flybys to Sample Return: A Review of Space Probes and Robotic Sampling Technologies for Small Bodies

open access: yesJournal of Field Robotics, EarlyView.
ABSTRACT As a crucial puzzle piece of deep space exploration, exploring small bodies can provide significant scientific insights and valuable mineral resources. Unlike missions to the Moon and Mars, small‐body missions pose distinct technical challenges, including communication delays, weak gravity, and uncertain environments. This paper reviews a full
Xin Zhang   +3 more
wiley   +1 more source

Evidence for the interplanetary electric potential? WIND observations of electrostatic fluctuations [PDF]

open access: yesAnnales Geophysicae, 2002
In the solar wind at 1 AU, coherent electrostatic waveforms in the ion acoustic frequency range (~ 1 kHz) have been observed by the Time Domain Sampler (TDS) instrument on the Wind spacecraft.
C. Lacombe   +9 more
doaj   +1 more source

Hexapod Locomotion Across Structured and Unstructured Terrains: A Data‐Driven Review of Modeling, Control, and Validation

open access: yesJournal of Field Robotics, EarlyView.
ABSTRACT The design of a hexapod is complex and requires integration between kinematic models, control systems, and sensing. Existing literature has reviewed these sub‐systems in isolation. Since 2021, there has been no review of the field despite significant advancements in soft soil, lunar traversal, and artificial intelligence.
Akhil Rampersad, Bashan Naidoo
wiley   +1 more source

Oscillations in the open solar magnetic flux with a period of 1.68 years: imprint on galactic cosmic rays and implications for heliospheric shielding [PDF]

open access: yesAnnales Geophysicae, 2004
An understanding of how the heliosphere modulates galactic cosmic ray (GCR) fluxes and spectra is important, not only for studies of their origin, acceleration and propagation in our galaxy, but also for predicting their effects (on technology and on the
A. Rouillard, M. Lockwood, M. Lockwood
doaj   +1 more source

Physical Processes and Models of Interplanetary Responses: Suggested Theoretical Studies [PDF]

open access: yesSymposium - International Astronomical Union, 1980
Three ways to improve the theory and therefore the understanding of the physical processes in the interplanetary medium (during both quiet and disturbed periods of solar activity) are suggested. They are: (1) the development and consequently the use of higher order moments (fluid) equations as well as of more realistic closure conditions and transport ...
openaire   +1 more source

Thermo-physical properties of 162173 (1999 JU3), a potential flyby and rendezvous target for interplanetary missions [PDF]

open access: yesAstronomy & Astrophysics, 2010
6 pages, 5 figures, 2 tables, accepted for publication in A&A (date of acceptance 05/Nov/2010)
Müller, T.   +17 more
openaire   +3 more sources

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