A “wall of hydrogen” has been discovered on the edge of our solar system, and NASA scientists believe their spacecraft , New Horizons can see it.
That wall of hydrogen is the outer limit of our system home, the place where it ends our bubble of the solar wind and where it builds up a mass of interstellar matter is too small to get through that wind, pressing inward. The powerful jets of matter and energy from our host star flow out for a long stretch after leaving the Sun, far beyond the orbit of Pluto.
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But at a certain point, they are exhausted, and your capacity to roll back the particles of dust and other materials, the thin and mysterious things floating in the walls of our galaxy, is waning. A visible boundary is formed. On one side are the last vestiges of the solar wind. And on the other side, in the direction of the movement of the Sun through the galaxy, there is an accumulation of interstellar matter, including hydrogen.
And now NASA researchers are quite confident that New Horizons, the probe passed almost touching Pluto in 2015, you may see that limit.
What New Horizons will definitely see it, it is something extra ultraviolet light, the type that researchers would expect that would produce a wall of hydrogen to the galactic. That replicates a signal uv of the two spacecraft Voyager, the probes travel further afield from NASA, which was launched at the end of the 1970s, which were discovered in 1992.
However, warned the researchers, this signal is not a sure sign that New Horizons has seen the wall of hydrogen, or that the Voyager did. The three probes could have detected the ultraviolet light from any other source, that came from much deeper in the galaxy, ” the researchers wrote.
But Alice, the instrument aboard New Horizons responsible for this finding, it is much more sensitive than anything that Voyager had on board before they begin their own journey out of the solar system, researchers wrote. And they said that they expect Alice to work 15 to 20 more years.
New Horizons will continue scanning the sky in search of ultraviolet light twice a year, the researchers wrote, and inform you what is seen on Earth.
The researchers explained in a press release:
If the uv light falls at some point, then New Horizons can have left the wall in your rearview mirror. But if the light never vanishes, then its source could be later, coming from somewhere deep in the space”.
The scientific study has been published in Geophysical Research Letters.