yes on Jupiter scientists found a small molacule
Yes.
No, in recent history no human has set foot on any planet other than earth !
There has not been any found yet.
No. But maybe there's a planet that we havent discovered yet
Pretty much every planet has an axis, because an axis is what a planet rotates around. Any planet that rotates has an axis, and pretty much every planet known rotates.
So far no planet has been discovered that would support our kind of life, certainly not in our solar system
It is not possible for a living creature to survive on the planet Uranus. The planet is far too cold to support any lifeforms.
there are no living organisms on any planet in our solar system besides earth to our knowlegde.
No, Earth is a planet orbiting the Sun.
Mercury has the second lowest density of any planet in the solar system. Saturn has the lowest density of any other planet.
Earth or any planet where life is possible
I suggest you check your question. Earth is a planet. Earth does not 'contain' any planets; therefore the only answer to your question is....earth.