Fig. 2
From: Auroral responses to the visit of comet 73P/Schwassmann–Wachmann 3 in 2006
a: A schematic of geometry (not to scale) shows the location of ACE/Wind satellites. The ACE and Wind are satellites located at Lagrange point (L1) in the Sun–Earth system. b: A top view of a schematic of geometry (not to scale) shows the location of the Sun, Earth, and fragment C of the comet 73P/Schwassmann–Wachmann 3 on May 31 2006. The directions of motion of the Earth and comet are also marked in the figure