One Gram of Passerby

They are just passers-by from outside the solar system, entering the solar system accidentally, and then returning to the vast depths of eternity without hesitation. ——Aperiodic comet 9649XS "So far, among the 5,000 comet records over the past few centuries, 9649XS has not been directly observed. With individual comets, they have transformed from non-periodic comets into new periodic comets due to the gravitational attraction of the planets in the solar system. It seems to be condensing an undetectable force and is heading towards the sun. And this forward force is undergoing a qualitative change." "This is an untheoretical explanation, doctor. Could it be that it is disturbed and pulled by the gravity of an outer planet? That makes it move in the direction of the sun?" "It has now passed Neptune. Do you know what that means?" "The distance between Neptune and the sun is about 4.504 Billion kilometers, and the astronomical distance is 30.13. So where is it?" "This is exactly what I want to say, the power of its qualitative change is changing the mass of the universe. It only took 24.4 Light-years to pass through Saturn, and it is becoming photonized." This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.