New Horizons probe may have detected Solar System's hydrogen 'wall'

Scientists have learned a bit about the edge of the Solar System from Voyager 1, but there hasn't been a lot of corroborating data without follow-up spacecraft. They appear to be getting a second chance, though. NASA's New Horizons spacecraft has det…
Source: Engadget | New Horizons probe may have detected Solar System's hydrogen 'wall'