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  • ASTRONAUTICS (GENERAL)  (2)
  • LAUNCH VEHICLES AND SPACE VEHICLES  (1)
  • SPACE SCIENCES (GENERAL)  (1)
  • Space Sciences (General)  (1)
  • 1
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    Unknown
    In:  Other Sources
    Publication Date: 2011-08-19
    Description: Questions related to the formation and the characteristics of comets are discussed, and it is suggested that an evolutionary link exists between comets, prebiotic organic synthesis, and the origin of life as it is known. Fundamental questions about the solar wind interaction with comets, are considered, giving attention to the ionization mechanisms in the different cometary regions, the presence of field-aligned currents, and the cometary plasma tail. It is pointed out that some of the questions will soon be answered when the NASA-ESA International Cometary Explorer (ICE) goes through the tail of Giacobini-Zinner in September 1985, and when a five spacecraft 'fleet' arrives at comet Halley in March 1986.
    Keywords: SPACE SCIENCES (GENERAL)
    Type: EOS (ISSN 0096-3941); 66; 33
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  • 2
    Publication Date: 2019-06-28
    Description: The International Solar Polar Mission (ISPM) onboard instrumentation for the magnetic field experiment to establish, on the basis of in-situ observations, the heliolatitude dependence of the interplanetary magnetic field, is described. The prime output consists of vector measurements, made by two triaxial magnetometers, of the ambient magnetic field along the orbit of the spacecraft. The onboard data processor generates two data streams to be transmitted through the spacecraft telemetry. The low speed, analog data stream consists of averaged and despun vector measurements, digitized in the spacecraft analog to digital converter (ADC). The despinning algorithm used in the analog processor is described. The high speed, digital data stream consists of vector measurements digitized in the instrument ADCs, generating up to two vector samples per sec. Multiple data-path switching is used to increase system reliability and to allow cross calibration of the ADCs. On board facilities for inflight calibration are described.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: ESA The Intern. Solar Polar Mission: Its Sci. Invest.; p 29-45
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  • 3
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    Unknown
    In:  CASI
    Publication Date: 2019-07-13
    Description: A real-time ISEE data system directed toward predicting geomagnetic substorms and storms is discussed. Such a system may allow up to 60+ minutes advance warning of magnetospheric substorms and up to 30 minute warnings of geomagnetic storms (and other disturbances) induced by high-speed streams and solar flares. The proposed system utilizes existing capabilities of several agencies (NASA, NOAA, USAF), and thereby minimizes costs. This same concept may be applicable to data from other spacecraft, and other NASA centers; thus, each individual experimenter can receive quick-look data in real time at his or her base institution.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: NASA-CR-162549 , LA-UR-79-1660 , CONF-790413-4 , Intern. Solar Predictions Workshop; Apr 23, 1979; Boulder
    Format: application/pdf
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  • 4
    Publication Date: 2020-01-07
    Description: No abstract available
    Keywords: Space Sciences (General)
    Type: JPL-CL-16-2690 , AGU Chapman Conference on Currents in Heliophysics; May 22, 2016 - May 27, 2016; Dubrovnik; Croatia
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  • 5
    Publication Date: 2019-08-28
    Description: The Solar Probe will deliver a 133.5 kg science payload into a 4 R(S) perihelion solar polar orbit to explore in situ one of the last frontiers in the solar system - the solar corona. Using a payload of 12 scientific experiments, it will be possible to answer many long-standing fundamental problems concerning the structure and dynamics of the outer solar atmosphere, including the acceleration, storage, and transport of energetic particles near the sun and in the inner heliosphere.
    Keywords: ASTRONAUTICS (GENERAL)
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