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The Voyager Interstellar Mission.

R P Rudd1, J C Hall, G L Spradlin

  • 1Jet Propulsion Laboratory, California Institute of Technology, Pasadena, USA.

Acta Astronautica
|January 1, 1997
PubMed
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The Voyager Interstellar Mission aims to study the space beyond Neptune and the boundary between the solar system and interstellar space. Automated tools support operations, maximizing data return from the aging spacecraft.

Area of Science:

  • * Planetary Science and Heliophysics: Investigating the outer heliosphere and the heliopause boundary.
  • * Space Exploration: Analyzing data from the long-duration Voyager mission beyond Neptune.

Background:

  • * The Voyager Interstellar Mission (VIM) commenced in 1990, building upon over twelve years of successful interplanetary and planetary exploration by the two Voyager spacecraft.
  • * Voyager spacecraft had already provided extensive data on Jupiter, Saturn, Uranus, Neptune, and the interplanetary medium within Neptune's orbit.

Purpose of the Study:

  • * To characterize the interplanetary medium beyond Neptune.
  • * To identify the transition region between the interplanetary and interstellar media.
  • * To potentially achieve penetration of the termination shock and heliopause boundary.

Main Methods:

  • * Utilizing the existing Voyager spacecraft and their scientific payloads for extended data collection.

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  • * Implementing a robust mission operations system designed for long-term support.
  • * Developing and employing automated analysis tools to manage reduced flight team staffing.

    • Main Results:

    • * The mission's extended operational capability allows for continued data return until approximately 2020.
    • * A high probability exists for one spacecraft to enter interstellar space before mission end.
    • * Strategies are in place to maximize science data return despite potential subsystem failures.

    Conclusions:

    • * The Voyager Interstellar Mission is strategically designed to maximize scientific return from the outer heliosphere.
    • * Advanced mission operations and automated analysis are crucial for sustaining long-term deep space exploration.
    • * The mission holds significant potential for groundbreaking discoveries regarding the boundary of our solar system.