Dr Moore's colleague Prof Mukul Sharma, also from Dartmouth College, told BBC News: "You would need some special pleading for an asteroid moving very rapidly - although it is possible. But of the comets and asteroids we have looked at in the skies, the comets are the ones that are moving very rapidly."
ncG1vNJzZmivp6x7o67CZ5qopV%2Bjsri%2Fjqyaop2emLJusc2voKunnqKyr8CMa2hwaGlnf3o%3D