Exposing Pseudoastronomy

In 2008, and ever since, young-Earth creationists have claimed that MESSENGER spacecraft results from the planet Mercury indicate that Mercury's magnetic field has been decreasing, in-line with creationist Russell Humphreys' prediction back in 1984. Find out if the data support this, and if there are other explanations. Or, if we need to throw out an old Mercury for a recently created one.