| An animation of the Moon (the small white circle) crossing the magnetospheric tail (the blue circle) around Christmas 2007 (the time is shown at the upper left). The view is from the Earth looking away from the Sun. The Moon crosses from right to left and occasionally encounters the plasmasheet (red). The two distance scales are in units of multiples of the radius of the Earth (Re). Credit: Dr. Mike Hapgood/Rutherford Appleton Laboratory |
