Since we often do not see what we're not looking for, instruments and probes saw only the volcanic moon, but not the slight shifts in mass.
Mustafar was originally designed to look like Lucas' vision of hell, and drew heavy inspiration from Jupiter's volcanic moon Io.
Sulfates from Jupiter's volcanic moon Io as well as other chemicals such as oxygen and hydrogen peroxide are present on the Europan surface.
This NASA montage of New Horizons images shows Jupiter and its volcanic moon Io, taken during the spacecraft's Jupiter flyby in early 2007.
Do you recall that night of June When from the insufferable day Edged out the dead volcanic moon Solemn into midnight?
The distinctive colors of Jupiter's volcanic moon Io are attributed to various forms of molten, solid and gaseous sulfur.
Io is also the name of the volcanic moon of Jupiter.
Some astronomers had suggested that the impacts might have a noticeable effect on the Io torus, a torus of high-energy particles connecting Jupiter with the highly volcanic moon Io.
Auroral radio emissions from giant planets with plasma sources such as Jupiter's volcanic moon Io could be detected with future radio telescopes such as LOFAR.
He studies volcanic eruptions on Earth and Io, the volcanic moon of Jupiter.