Question

The Sun is a burning spacecraft can land on the surfaces of Jupiter, Saturn, Uranus and Neptune?
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Answer 1

Answer:

While a spacecraft would have nowhere to land on Jupiter, it wouldn't be able to fly through unscathed either. The extreme pressures and temperatures deep inside the planet crush, melt, and vaporize spacecraft trying to fly into the planet.

Answer 2

Why would it be impossible to land a spaceship on Jupiter, Saturn, Uranus, or Neptune and then blast off again?

Because there’s no place to land the spaceship unless you built a giant zeppelin or other floating aircraft carrier. The smaller two worlds, Uranus and Neptune, are called Ice giants because most of their mass is a mantle of water and ammonia. This mantle has a temperature ranging from 1,727C (at the top of Neptune’s mantle) to 4,727C (at the top of Neptune’s core), and the pressure near the fuzzy mantle “surface” is about 100,000 times the surface pressure of Earth.

Jupiter and Saturn have much higher temperatures and pressures before you get close to anything nearly solid.

Assuming you’ve deployed a big, floating spaceport for your spaceship, the next problem is Escape velocity. Rocket fuel use increases exponentially with desired velocity, and the escape velocities of even Uranus and Neptune are twice that of Earth’s. You’d need a ridiculously large rocket - like a Saturn V - to put a tiny capsule into orbit. Jupiter’s escape velocity of 60km/s is just about insurmountable without something like an Orion drive, and I’m not sure whether the 36km/s of Saturn is achievable with chemical rockets.