Selikoff writes "NASA's Voyager 2 spacecraft has found that our solar system is not round but is "dented" by the local interstellar magnetic field of deep space, space experts said on Monday. The data was gathered by the craft on its 30-year journey into the edge of the solar system when it crossed into a sweeping region called the termination shock, they said. It showed that the southern hemisphere of the solar system's heliosphere is being pushed in or "dented." Voyager 2 is the second spacecraft to enter this region of the solar system behind Voyager 1, which entered the northern region of the heliosheath in December 2004."
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