The Bible refers to two realms or what we might call dimensions.
There is a physical dimension and there is a spiritual dimension.
The spiritual dimension is referred to as heaven, a higher dimension.
These seem to be speculations.
The bible talks about heaven and earth, but it describes heaven as the sky, which seems to include space above our atmosphere. And Paul said he was taken up into the third heaven. So perhaps you are talking about the third heaven. It is interesting that Paul said he was taken UP. and Jesus ASCENDED. The third heaven must be ABOVE.
Jesus was born again, not of flesh he had already been born of flesh.
Jesus was born again with a spiritual or heavenly body.
Was He born again? Or was He resurrected? If the latter, then His body was reused, and somehow changed. If His body was not reused and changed, then His body would still be in the ground. But one of the evidences of our hope for resurrection is that Jesus body did not remain in the ground--and our hope is that ours won't either. Which makes me wonder if the idea of a spiritual existence is not a full enough picture of our existence with Christ.
Paul explained, "Now this I say, brethren, that flesh and blood cannot inherit the kingdom of God, nor does corruption inherit incorruption." (1 Corinthians 15:50)
We will put on incorruption, 1 Cor 15:53, and what is mortal will put on immortality. The thing that gets immortality is the thing that was once mortal, not something else that was already immortal.
Jesus is the firstborn of the kingdom. He was born of water and he was born of the Spirit.
Jesus has an incorruptible, immortal, invisible body.
Jesus had a visible body. One that could be touched. It was scarred from His crucifixion. Are you saying that was merely a temporary manifestation?
The heavenly body is invisible.
"And as we have borne the image of the man of dust, we shall also bear the image of the heavenly Man." (1 Corinthians 15:49)
What/who is "the heavenly Man"? Isn't it Jesus Christ? And He had a visible body.
Since heavenly beings cannot be seen with physical eyes heavenly beings must appear physically.
Did Jesus use His resurrected eyes? Did Jesus not eat with His resurrected body? His body, which He was in before He died, is the same one He was in after He rose. It was changed, but the same body. Otherwise showing His disciples His nail scars in His hands and the spear wound in His side was a charade.
And if Jesus' body was NOT raised, then neither will ours be raised, and thus we won't be resurrected. Our hope is that we will be resurrected, and if Jesus was not raised, then neither will we be.
Jesus ate broiled fish with his human disciples. (Luke 24:42-43)
Jesus will appear to the world. (Matthew 24:30)
Job will be able to manifest himself as a fleshly being.
Maybe Job will be visible. Jesus was visible until He disappeared from view as He went up into a cloud--not because He became invisible in body, but He was no longer in their view, thus "invisible", if you want.