Answer: Saturn
Notes: Recent re-analysis of National Aeronautics and Space Administration (NASA) Cassini spacecraft data suggests that Saturn’s moon Titan may not have a subsurface ocean as earlier believed. Titan is the largest moon of Saturn and the second largest in the solar system after Ganymede. It was discovered by Dutch astronomer Christiaan Huygens. Titan has a radius of about 2,575 kilometres and is much wider than Earth’s Moon. It is the only moon with a dense atmosphere, mainly nitrogen with some methane. Titan is the only world besides Earth with rivers, lakes, and seas of liquid on its surface. It has an Earth-like methane cycle with rain, flow, and evaporation.
