Do Neptune's moons have volcanoes?
Although Neptune's moon have volcanic-like craters, scientists don't believe any of them have active volcanoes. Triton, Neptune's largest moon, has geysers, but not volcanoes.
Do mars has moons rings or other features such as volcanoes craters mountains storms or marks on mars?
Io is the innermost of the four large moons (Galilean moons) of Jupiter. Its closeness to Jupiter means that its surface is in a constant state of flex, the gravity from Jupiter distorts its surface, generating heat and flaws in the surface of the moon. This means that volcanoes are a common occurrence on Io.