Logo a day 075 - Io
Io is the innermost of the four Galilean moons of the planet Jupiter. It is the fourth-largest moon in the solar system. It was discovered in 1610 by Galileo Galilei.
Io is the innermost of the four Galilean moons of the planet Jupiter. It is the fourth-largest moon in the solar system. It was discovered in 1610 by Galileo Galilei.