Such large bodies would affect the orbits of exocomets in the Beta Pictoris system, giving astronomers clues to their presence and movement. (sciencemag.org)
In contrast, exocomets in the other family stray in different orbits and directions. (sciencemag.org)
One family of exocomets appears to have very similar orbits, all coming in toward the star like a string of pearls. (sciencemag.org)