Gas giants like Jupiter and Saturn doesn't have a solid surface for spacecraft to land on. Similarly, ice giants like Uranus and Neptune also lack a solid surface due to their thick atmosphere and icy composition. Consequently, spacecraft cannot land on these planets.
The cores are so deep in the planets
The outer planets are gas giants, made mostly or entirely of gas, so either there is no surface to land on, or even if there is, it lies underneath such a large amount of atmosphere that the atmospheric pressure would crush any spaceship that tried to land there. However, the outer planets also have lots of moons, which would be very suitable places for spacecraft to land.
Jupiter and Saturn are gas giants, composed mostly of hydrogen and helium with no solid surface to land on. Their atmospheres are extremely thick and turbulent, which would make it impossible for any spacecraft to land safely. Additionally, the high pressure and temperature closer to their cores would destroy any probe before it could reach a solid surface (if one even exists).
Gas giants like Jupiter and Saturn do not have a solid surface to land on because they are composed mostly of gas and liquid. Their outer layers consist of dense clouds of gas that gradually transition to liquid deeper within the planet. Attempting to land on a gas giant would be like trying to land on a thick, stormy atmosphere.
Gas giants like Jupiter and Saturn doesn't have a solid surface for spacecraft to land on. Similarly, ice giants like Uranus and Neptune also lack a solid surface due to their thick atmosphere and icy composition. Consequently, spacecraft cannot land on these planets.
No because there is nothing to land on. This is why they are called gas giants. They are made of only gas and maybe a few rocks. Also, some gas giants consist of deadly gas. Overall, it would be too dangerous to enter a gas giant, let alone try to "land" on one.
The cores are so deep in the planets
voyager 1 and/or 2
The outer planets are gas giants, made mostly or entirely of gas, so either there is no surface to land on, or even if there is, it lies underneath such a large amount of atmosphere that the atmospheric pressure would crush any spaceship that tried to land there. However, the outer planets also have lots of moons, which would be very suitable places for spacecraft to land.
Voyager 2
yes it can
The spacecraft that flew by and photographed the four gas giants in the 1970s was Pioneer 10 and Pioneer 11. These missions provided valuable information and images of Jupiter and Saturn, while Voyager 1 and Voyager 2 missions in the late 1970s provided images of all four gas giants, including Uranus and Neptune.
Saturn is a gas giant, it may not even have a solid surface in the middle. Even if there were, no imaginable spacecraft could survive long enough to reach it. Gas giants can be considered "failed stars" that just weren't massive enough to start fusion. They are a thoroughly nasty environment. So, no.
The spacecraft that flew by and photographed the four gas giants in the 1970s was Voyager 2. It captured images and data of Jupiter, Saturn, Uranus, and Neptune during its mission. Voyager 2 launched in 1977 and completed its encounters with the gas giants by 1989.
Jupiter's atmosphere is made up of dense clouds of gas that make it challenging for spacecraft to land on its surface. Additionally, the intense radiation and magnetic fields around Jupiter pose risks to the spacecraft's electronic components. It is more feasible and safer for spacecraft to study Jupiter from orbit rather than attempting to land on its surface.
No, it is not currently possible for a spacecraft to land on Uranus because of its lack of a solid surface. Uranus is a gas giant composed mostly of hydrogen and helium, with no firm ground to land on. Any probe sent to Uranus would have to study the planet from its atmosphere or orbit.