Jupiter is a gas giant with no solid surface, consisting mostly of hydrogen and helium. A rover would simply sink into its atmosphere without finding a stable landing spot.
Similar to Jupiter, Saturn is a gas giant with no solid surface to land on. Its outer layers are mostly gases and liquids, making it impossible for a rover to find solid ground.
Neptune is another gas giant with a lack of solid surface. Its thick atmosphere is composed of hydrogen, helium, and methane, posing challenges for a rover to find a stable area to land.
Uranus, like Neptune, is a gas giant with no solid surface. Its atmosphere is primarily hydrogen and helium, making it unsuitable for rover landings.
The sun is a star composed mostly of hydrogen and helium, with extremely high temperatures and intense radiation. Any rover trying to land on the sun would be incinerated instantly.
Moons like Titan (Saturn's moon) and Triton (Neptune's moon) have subsurface oceans beneath layers of ice. A rover would have difficulty landing and exploring due to the challenges posed by the icy surfaces.
Planets with extremely high gravity, such as those in close proximity to their host stars, would require a rover to withstand immense pressure during landing, making it challenging to safely land and explore.