Cloudy sky, so no Astronomy, or any idea of other planets, stars, even sun, since no day or night, just darkness.
No geology, since no solid ground. Just very very stiff gases, some chunks that are solid.
Very hot, since interior gives off more heat than what comes down from distant sun.
Occasional asteroid or comet giving off 7000 mile wide super explosions as they rocket in from far distance.
Garden of Great Red Spot with 300 mph swirling winds.
Methane, sulfur dioxide, carbon dioxide, no free oxygen.
Atmospheric pressure of tens of thousands of pounds per square inch.
No need to bring your swimsuit. No water.