Tyche

I was reading an article about the possiblity of a new planet -- Tyche.  Scientists are only theorizing about its existance, based on the action of objects around it.  Orbits of comets with the Oort cloud where Tyche might exist are ellipitcal, as if something is interfering with their movements.

This is my favorite quote from the article:

The IAU (International Astronomical Union) has laid out strict guidelines concerning what constitutes a planet; if Tyche does exist, it would have to meet each one of those guidelines to bring the solar system back to a total of nine planets. ....The existence -- or nonexistence -- of Tyche should be determined conclusively within the next two years.

The planet exists or does not exist completely independent of any declaration from the IAU.  The Union is not deciding, in the new two years, if the planet will exist or can exist.  I was just stopped by the way the sentence is worded.  At my first reading, it sounds as if the conclusions of the IAU will determine the existance of the planet.

Do we do that with our faith in God?  Do we fool ourselves into believing that we are entitled to declare God's existance (or non-existance)?  Do we act as if our understandings of God define him?