
Astronomers have discovered hundreds of strange, stringlike structures at the center of our galaxy, possibly tracing the violent path of an ancient black hole eruption.
According to new research published June 2 in The Astrophysical Journal Letters, each of these previously unknown "filaments" measures between 5 and 10 light-years in length — thousands of times the distance between the sun and Pluto — but is visible only in radio wavelengths, meaning the structures were likely created by bursts of high-energy particles that are invisible to the naked eye.