Neptune: As it cannot be seen with the naked eye.
All the rest, including Uranus can - if you know where to look.
Inconspicious
yes
The prefix for "conspicuous" is "un-".
what keeps planet earth from fallin out of the sky
Venus Venus isn't a minor planet, the answer is Pallas I believe it is Vesta.
Something that is easy to spot, not hidden.
There isn't such a planet called planet trio, not in our solar system at least. A planet trio refers to three planets seen in the same area of the sky, tightly bunched as viewed from earth. For example, you may see mercury, Venus and Jupiter all close together in the sky and could call it a planet trio.
The planet Uranus was named for the primordial god who personified the sky.
The planet Venus is!
The answer is the planet Uranus
The planet Venus is!
Uranus is named after the Greek god who personified the sky. Uranus is the seventh planet from the Sun in the Solar System.