IBEX, The Energetic Neutral Atom Hunter

The termination shock, the point at which the interstellar medium interacts with the heliosphere (NASA)
The termination shock, the point at which the interstellar medium interacts with the heliosphere (NASA)

The Interstellar Boundary Explorer (IBEX) is set for launch in October and it will carry out some pretty cool science when in space. Orbiting Earth 200,000 miles away, IBEX will be on the lookout for tiny, but significant particles originating from the edge of our solar system. Why? It turns out these neutral atoms will provide information on the location and characteristics of the point at which the Solar System’s edge mixes with the tenuous gas between the stars. So how are they generated? How do we know they originate from the termination shock?
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