There is a small but real chance that it could temporarily capture the inter-stellar current, depriving the Sun, Aten or Helios, of current! The loss of out put would be very measurable, even allowing for a transistor effect? The appearance of a "new star" would be astonishing and probably very disruptive to all planetary positions.
Cosmic Billiards anyone? Flood of protons would also mean massive precipitation and loss of some oxygen from our atmosphere. The drop in temperature is a most likely event. Another ice age? Given the apparent continental shelving, could we hope for a gentle expansion of the earth, with gentle earthquakes, orogenesis and vulcanism?
I was admonished by the dickhead Dave Smith for similar concerns, years ago.