What planet do we know least about?

Answer 1

Pluto is the least known planet within our solar system. This is simply because it is so far away - no man-made craft has ever been sent to observe it.

** It should be noted that Pluto is now considered to be a dwarf planet instead of a planet, after the 2006 ruling by the International Astronomy Union that defined what a planet is.

Answer 2

We know the least about the planet Uranus compared to other planets in our solar system. It is the seventh planet from the Sun and has only been visited by a single spacecraft, Voyager 2, in 1986. Its thick atmosphere and unique rotation on its side make it a challenging planet to study.

Answer 3

This planet (or object in space) is planet X, or as most people refer to it to; planet Nibiru.

Answer 4

Scientists know the least about the planet Pluto. It is the furthest planet from the Earth in our Solar System and is the only planet that has not been viewed by an Earth spacecraft.

Answer 5

Many planets are hard for scientists to study because they are so far away, but the hardest one is Pluto.

Answer 6

The planet we know least about is Saturn.

Answer 7

Pluto