There's a "hydrogen wall" at the edge of our solar system

[longknife]

Wow! Supposedly where our solar winds die out and interstellar matter trying to get in builds up.

What New Horizons definitely sees, the researchers reported in a paper published Aug. 7 in the journal Geophysical Research Letters, is some extra ultraviolet light — the kind the researchers would expect such a wall of galactic hydrogen to produce. That replicates an ultraviolet signal the two Voyager spacecraft — NASA's farthest-traveling probes, which launched in the late 1970s — spotted all the way back in 1992. [Images: Dust Grains from Interstellar Space]

More @ NASA spotted a vast, glowing 'hydrogen wall' at the edge of our solar system

 

[miketx]

If we could only invent a propulsion system for space craft that used hydrogen as a fuel, we could go anywhere in our neighborhood.

 

[ThunderKiss1965]

If we could only invent a propulsion system for space craft that used hydrogen as a fuel, we could go anywhere in our neighborhood.

Fusion rocket but it wouldn't make much sense to go that far out to collect hydrogen to use inside the solar system when you can setup collectors near the sun. It may not even be practical to use this hydrogen for interstellar travel because a ship leaving earth would have to decelerate to fuel up and then accelerate again on its way out of the solar system That's a lot of wasted time and energy.