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...

https://www.engadget.com/2018/08/12/...r-system-wall/