Astronomy Picture of Day: moon over Jupiter# Astronomy - 天文
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Io: Moon Over Jupiter
Explanation: How big is the Jovian moon Io? The most volcanic body in the Solar System,
Io (usually pronounced "EYE-oh") is 3,600 kilometers in diameter, about the size of planet
Earth's single large natural satellite. Gliding past Jupiter at the turn of the millennium, the
Cassini spacecraft captured this awe inspiring view of active Io with the largest gas giant as a
backdrop, offering a stunning demonstration of the ruling planet's relative size. Although in
the picture
Explanation: How big is the Jovian moon Io? The most volcanic body in the Solar System,
Io (usually pronounced "EYE-oh") is 3,600 kilometers in diameter, about the size of planet
Earth's single large natural satellite. Gliding past Jupiter at the turn of the millennium, the
Cassini spacecraft captured this awe inspiring view of active Io with the largest gas giant as a
backdrop, offering a stunning demonstration of the ruling planet's relative size. Although in
the picture