New Horizons Spacecraft Observe What Appears to Be a Hydrogen Wall at the Edge of Our Solar System

(From Motherboard)

As detailed in a recent paper in Geophysical Research Letters, the New Horizons spacecraft observed ultraviolet light that many physicists think results from a hydrogen ‘wall’. In other words, if the solar system is an egg, New Horizons just got its first glimpse of what appears to be the shell.

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