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heliosphere-nobowshock.jpg

New data from NASA’s Interstellar Boundary Explorer (IBEX) shows that the heliosphere moves through space too slowly to form a bow shock.
The heliosphere is the region of space dominated by the Sun that cocoons Earth and the other planets. Inflated by the million-mile-per-hour solar wind, the bubble-shaped heliosphere pushes its way through the galaxy. For a quarter century, researchers bel