‘Bones’ in Milky Way could help map galactic structure
Gas tendrils trace location of spiral arms, study finds
BARING BONES One of six bone candidates, seen silhouetted in this Spitzer Space Telescope image, lies about 11,000 light-years away; it is roughly 140 light-years long and 0.52 light-years wide.
JPL-Caltech/NASA, Univ. of Wisconsin