it would take an enormous force to offset the earths axis to such a degree.
this has been used to explain Global Warming , its sad that this type of stuff influences peoples opinions instead of the real culprit , our energy usage.
think of a gyroscope and the force needed to change its axis of rotation !! the angular momentum of the earth as it rotates would be almost impossible to overcome unless struck by a similar sized object.
also for those of you who are worried about the
(supposed niburu's) gravitational effects offsetting the earths axis of rotation
it may offset the earths orbit but should not affect its axis strictly due to gravitational attraction.
there may be some tidal effects and even some crustal effects
depending on the closeness , but our main worry should be the Climate. !!! something we can fix !!!
...
