A Ninth Planet Might Be In Outer Solar System 5-10 times more massive than Earth

None.

Haters gonna hate! I saw Matt Damon grow potatoes on MARS!

I've seen proposals that might give Mars a breathable atmosphere and biosphere within a couple of hundred years though some say a couple of thousand.

After Mars, in order of terraformation would probably be Luna (the moon), Venus, Callisto/Mercury (combined then moved to orbit Venus, and then Ganymede (moved to be a major moon of Mars).

That would give us a total of six inhabited worlds in this solar system. All planet/moon pairings.

I took that by the way from space expert James Oberg's book "New Earths".

Imagine if you will a giant ice world such as the proposed 9th planet with a large fusion plant placed in orbit around it, radiating heat effectively serving as a "sun". Raising temperatures enough to melt ice on its surface. If liquid water can exist then you've got a biosphere eventually.

How would you move a planet into a different orbit?

I'm not sure that's even possible, regardless of our tech level.

Nudge it by using thousands of close approaches by smaller bodies (asteroids) which you can move using mass drivers for example.

Let's give it a name starting with P so we don't have to come up with new mnemonics.

It would make much more sense, much more feasible, much more accessible, and much closer to use the Galilean moons and possibly the larger moons of Saturn than to try to terraform and move a planet that is out that far.

Like I said. I wouldn't move this planet. The only one I would move would be Mercury after a collision and merging with Callisto out to orbit Venus.

This one you could solve the solar energy problem by a fusion furnace orbiting it (much like the ancients thought the sun circled the Earth)

Note, we're talking about probably 30th century technology.

I have two things to say about moving that planet.......Chuck Norris

He wouldn't move Mercury... he'd move the Sun.

As far as naming, why not start using the Greek or Roman Titans. Some are already in use, but there are still a few I haven't seen

Which is difficult when the sun rises and sets in his pants.

How about Niburu?

Or some of the Norse gods? Thor, Thor's Hammer, or Odin?

Kobol or Coruscant.

Joey Joe Joe Junior Shabadoo.

The Wrath of Pluto

Pluto II: Electric Plutoloo.

Tartarus

Now that's an idea!

Name it after Clyde Tombaugh.

The irony meter might well explode.

Rama.

5-10 times the size of Earth.

That's almost the size of Rosie O'Donnell's ass.

God trying to boost subs by releasing an xpac

I'm not sure that moving anything that size through Earths orbit is a good idea.

Totally fucking up earth's orbit would be one reason not to.

Space is vast. It would have no effect on Earth or its orbit assuming far enough away.

mercury is glorified moon.

one cheek's worth anyway!

Just saw they narrowed down the search area by a considerable amount. Though that still means years of work with high powered telescopes unless they get really lucky.