Saturn
Saturn
saturn
Saturn
saturn
Venus
Venus.
'Saturn' is the planet known for rings. Saturn's ring system is the most extensive and complex in the solar system, extending hundreds of thousands of kilometers from the planet. In the early 1980s, NASA's two Voyager spacecraft revealed that Saturn's rings are made mostly of water ice. They also found "braided" rings, ringlets, and "spokes," dark features in the rings that circle the planet at different rates from that of the surrounding ring material. Material in the rings ranges in size from a few micrometers to several tens of meters. Two of Saturn's small moons orbit within gaps in the main rings.
The Earth's crust is solid, consisting of rock, soil, and sediments.
Pluto.
Saturn
Planet Mercury was not discovered, it has been known to exist for thousands of years.
It is a water planet. Although the mantle is termed icy - as is the convention in planetary science - it is, in fact, a hot dense fluid consisting of water, ammonia and methane.