Results 101 to 110 of about 30,135 (276)

Distributed angle‐only orbit determination algorithm for non‐cooperative spacecraft based on factor graph

open access: yesIET Radar, Sonar & Navigation
Bayesian filtering provides an effective approach for the orbit determination of a non‐cooperative target using angle measurements from multiple CubeSats.
Zhixun Zhang   +4 more
doaj   +1 more source

Four-point high time resolution information on electron densities by the electric field experiments (EFW) on Cluster [PDF]

open access: yesAnnales Geophysicae, 2001
For accurate measurements of electric fields, spherical double probes are electronically controlled to be at a positive potential of approximately 1 V relative to the ambient magnetospheric plasma.
A. Pedersen   +9 more
doaj   +1 more source

Embedded Interactions and Selective Disclosure: Network Effects on Conversations aboard Skylab

open access: yesSymbolic Interaction, EarlyView.
How do absent others influence our interactions? We argue in this paper that interactions are embedded within networks formed by chains of specific relationships between known third parties. The anticipation of future interactions with external others conditions our interpretation of the current situation and affects our behavior in the interaction. We
Michael Schultz   +2 more
wiley   +1 more source

Cluster: A fleet of four spacecraft to study plasma structures in three dimensions [PDF]

open access: yes
The four Cluster spacecraft are spin stabilized spacecraft which are designed and built under stringent requirements as far as electromagnetic cleanliness is concerned.
Goldstein, M. L., Schmidt, R.
core   +1 more source

EU Space Law and Earth's Boundaries: Integrating Environmental Impact Assessment and Corporate Due Diligence

open access: yesGlobal Policy, EarlyView.
ABSTRACT The European Union's proposed Space Law aims to establish a unified approach for sustainable space activities across the EU. While the EU's satellite constellations contribute to sustainability efforts, they can also have negative environmental impacts.
Elena Cirkovic, Vitali Braun
wiley   +1 more source

Small-scale dipolarization fronts in the Earth′s magnetotail

open access: yesEarth and Planetary Physics, 2019
Previous studies suggest that dipolarization fronts (DFs) are 1 to 3RE (RE is the earth radius) wide in the dawn-dusk direction. Recent kinetic simulations have found that DFs may break up into small-scale structures after they are produced by ...
Jing Huang   +5 more
doaj   +1 more source

Investigation of intermittency in magnetohydrodynamics and solar wind turbulence: scale-dependent kurtosis [PDF]

open access: yes, 2011
The behavior of scale-dependent (or filtered) kurtosis is studied in the solar wind using magnetic field measurements from the ACE and Cluster spacecraft at 1 AU.
Matthaeus, William H.   +3 more
core   +2 more sources

Compression‐Expansion: Miniaturization, Modularity, and Logistics Beyond Earth

open access: yesAmerican Anthropologist, EarlyView.
ABSTRACT If the Cold War space race culminated in a return to Earth, at present we are experiencing a renewed interest in space. Drawing on fieldwork among people working in the space sector in Sweden, this article focuses on some of the imaginaries underpinning this resurgence and the contemporary commercialization of space. Specifically, I hone in on
Chakad Ojani
wiley   +1 more source

South-north asymmetry of field-aligned currents in the magnetotail observed by Cluster [PDF]

open access: yes, 2010
We statistically investigated features of the field-aligned current (FAC) distribution in plasma sheet boundary layers between 17 and 19 RE in the magnetotail using the curlometer technique to calculate the current from four-point magnetic field ...
Cheng, Z. W.   +20 more
core   +1 more source

Lactea: Web‐Based Spectrum‐Preserving Multi‐Resolution Visualization of the GAIA Star Catalog

open access: yesComputer Graphics Forum, EarlyView.
Abstract The explosion of data in astronomy has resulted in an era of unprecedented opportunities for discovery. The GAIA mission's catalog, containing a large number of light sources (mostly stars) with several parameters such as sky position and proper motion, is playing a significant role in advancing astronomy research and has been crucial in ...
Reem Alghamdi   +3 more
wiley   +1 more source

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