[Fractal Trader]

You can also find solid support for Planet X at enterprisemission.com. Hoagland may have his share of detractors, but he is a first rate astrophysicist and his numbers in support of Planet X, especially base on luminosity coefficients of the planets, is quite suggestive.

[donh]

but he is a first rate astrophysicist

He is a first rate science journalist. His theories and books are interesting, and haven't been definitively refuted except for a few minor side issues, but they don't make him an astrophysicist.