[AstralTraveller (David)]

Originally Posted by Kal

Obviously nibiru must be made of dark matter if it can't be seen, or it's gravitational effects can't be felt

Actually dark matter (assuming it really exists) gives away its presence by its gravitational effects. I think the first inkling that it may exist came from studies of galactic rotation and the realisation that there had to be more mass than was seen to account for the velocity distribution.

I know, I'm a party pooper.