article_snippet: A saline ocean under the moon’s icy crust best explains shifting in the auroral belts measured by Hubble.
article_snippet: with telltale visuals - twin bands of glowing aurora around .
article_snippet: Jupiter-orbiting moon Ganymede's aurora to rock.
article_snippet: It influences Ganymede's aurora to rock,' said geophysicist Joachim Saur, with the University of Cologne . in Germany. '
article_snippet: if . anything else could be having an impact on Ganymede's aurora.
article_snippet: observations and analyzed data for both belts of aurora. '