The marriage of Madonna with Guy Ritchie seems to be ending. Het progressed MC (for a birth 16th August 1958 at 7h05 at Bay City) wil be inconjunct Saturn end of April and that tells me that something somehow inevitably will come to an end.
In her solar return (birth day chart for 2007) we see Venus in between Sun and Saturn. That is a sign for a bad moment in marriage. The Moon is opposition the MC. A solar return with Moon related to the MC always points at a change in status, position or condition (for example motherhood, marriage, or reintegration etc.).
Explanation: a solar return chart is a chart errected for the exact moment that the Sun has the same degree, minute and second as on the moment of birth.