And when I say liquid water Moons Europa , Enceladus , and Titan are covered with solid water ice . Scientist Kevin Michael Hand says there could be vast liquid water oceans underneath the moon . These oceans could be great habitats for alien ecosystems , says Hand . The Earth 's oceans might help us understand fundamental geological and biological cycles .
Moons Europa , Enceladus , and Titan are covered with solid water ice . Scientist Kevin Michael Hand says there could be vast liquid water oceans underneath the moon . These oceans could be great habitats for alien ecosystems , says Hand . The Earth 's oceans might help us understand fundamental geological and biological cycles .