Red colors indicate the highest intensity of incoming particles, blue represents the lowest.
We are looking from the sun towards the Earth, viewing the cloud beyond the Earth on the night side. This is a selected frame from a sequence which is available as a quicktime movie. In order to generate very low frequency radio waves and to receive the resulting echoes, RPI uses very long dipole antennas. This is a selected frame from a sequence which is available as a quicktime movie. The green traces correspond to echoes from the plasmasphere at varying depths.