So the missions that we are learning about this very interesting region are coming from two different spacecrafts. One is the Voyager spacecrafts that were launched in 1977. So it took them 30 years to arrive there. And you have also the IBEX mission that was just launched in 2008 October and got the first maps of the energetic neutrals. So we are learning from these two different missions. Voyager is measuring in situ. So it's right there measuring. And the IBEX is looking at the global view about the same region.