[ShadowAce]

I wonder if this new planet would be concealed on the back side of the sun where we are never able to see it.

Given that the article says P9's orbit is about 10-20,000 Earth years, we would be in a position to see it at some point during our year.

[puppypusher]

I guess we’ll see in another 15000 to 20000 years.That is,If we’ll still be around.