hydrogen
Detected: Wall of hydrogen around the solar system
Hydrogen. One outcome of the exploration of Pluto and the surrounding area: So, what is this wall? We call it “space,” but space isn’t completely empty. Even in between stars there are some stray atoms and bits of dust. Clouds of neutral hydrogen atoms float through interstellar space, but the sun can affect how they’re distributed. Our local star emits a continuous stream of charged particles, which we call the solar wind. This outward force expands into a “bubble” around the solar system. The neutral hydrogen near our solar system slows down when it hits the solar wind, causing the atoms to build up into a “wall” structure. The researchers are fairly confident in their assessment of the hydrogen wall, Read More ›