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Related Experiment Videos

Project Galileo: completing Europa, preparing for Io.

J K Erickson1, Z N Cox, B G Paczkowski

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

Acta Astronautica
|November 16, 2001
PubMed
Summary
This summary is machine-generated.

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The Galileo spacecraft

Area of Science:

  • Planetary Science
  • Space Physics
  • Astrophysics

Background:

  • The Galileo mission has completed its Europa encounters, gathering data on Jupiter's moons.
  • The spacecraft is preparing for the Io phase of its extended mission.

Purpose of the Study:

  • To present new findings on Europa's magnetosphere, interior, and surface features.
  • To discuss data on Callisto and its potential subsurface ocean.
  • To explore engineering challenges and lessons learned from the Galileo mission.

Main Methods:

  • Analysis of data from ten close passes of Europa.
  • Examination of engineering data related to spacecraft operations and anomalies.
  • Assessment of radiation effects on spacecraft systems.

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Main Results:

  • New insights into Europa's interactions with Jupiter's magnetosphere.
  • Evidence suggesting a subsurface water layer on Europa.
  • Data on Callisto's potential for a subsurface ocean.
  • Identification of spacecraft anomalies due to high radiation levels.

Conclusions:

  • Europa exhibits features strongly indicative of a subsurface ocean.
  • Callisto may also possess a subsurface ocean.
  • Engineering data from radiation-induced anomalies will inform future deep-space missions.
  • The Galileo mission team demonstrated resilience in overcoming operational challenges.