I would love to see balloon missions sent to all the gas giants, and even Venus and Titan.
Imagine the beautiful pictures coming back from the atmospheres of theses worlds.
In Jupiter’s upper atmosphere, huge thundering clouds tower in the blue sky, creating huge canyon. Far below, storms spiral and ahead of us, a horizon that seems to go on forever.. Jupiter’s clouds come in a couple of different colors, depending on if they are made of water, ammonia, or something else. And at night, IO would appear about three times larger than our moon does in our skies. Europa would glow brightly. Don’t forget the aurora’s blazing across the night sky.

In Saturn’s upper atmosphere, you would see the rings arch across the blue sky. Of course, their appearance would vary depending on the balloon’s location. The rings would be gorgeous at night.

Uranus and Neptune would offer a balloon clouds and blue sky. On Neptune, Triton would be a sight to see.

A balloon floating high above Titan’s orange smog could return pictures of Saturn floating in a blue sky.

A balloon floating above the clouds of Venus would also see a blue sky, with turbulent clouds below. Sunsets and dawns would be spectacular. At night, maybe the balloon could snap some pictures of a very bright Earth above the clouds.

Such missions would not only bring us great PR pictures, they would also act as weather stations, teaching us about the weather of these 6 worlds with thick atmospheres and clouds.