Galilean

By looking through a telescope, you’ll be able to see Jupiter’s banded atmosphere and four Galilean moons, which may appear as tiny dots lined up around the planet, National Geographic says.

Slightly larger than Earth's moon, Io is the innermost of Jupiter's Galilean moons, which in addition to Io include Europa, Ganymede and Callisto.

The technique was tested successfully on various planetary systems -- including the Moon, and the Galilean moons of Jupiter.

Arnold doesn’t feel comfortable using that term, preferring to say it depicts Christ as a person of color, probably Middle Eastern, which she says would make sense, given where the Galilean Jewish preacher was from.

The differential compositions of the four Galilean moons has puzzled researchers for decades—ever since the first high-quality density measurements of the satellites were obtained.