Interesting. It is a little unclear to me from this article the nature of the discrepancy between the predicted strength of the gravitomagnetic field from general relativity and what the researchers claim to be observing. Whence the increase in strength in the gravitomagnetic field from predictions? Is it an effect from quantum theory? Maybe the article just doesn't go into detail enough, but seems to me either there needs to be a satisfactory explanation for this discrepancy, or, what they are observing is not the gravitomagnetic field.