Earth is no longer the only planet with confirmed geological activity.

Which of the planets is not Geological active?

Mercury and the Moon are sometimes called "dead" bodies, because there is no evidence of current geologic activity. The in-between cases are Mars and Venus.

Can moons be geologically active?

Jupiter's moons Io and Europa, and Saturn's moons Enceladus and Titan, show remarkable geological activity for their small size, with features ranging from volcanoes and water plumes to possible subsurface oceans.