Earth, Venus and Mercury all share their orbits around the sun with vast clouds of dust NASA's Goddard Space Flight Center/Mary Pat Hrybyk-Keith
Mercury appears to share its orbit with a huge ring of dust millions of kilometres thick, and scientists aren’t sure how it got there. None of the mechanisms researchers could think of to explain it create enough dust, and the region of space it passes through is so close to the sun that we would expect any dust there to be pulled in by the sun’s gravity almost immediately.
The dust ring was …
