If they hit Earth, which is an extremely rare event, then they could cause a disaster. Just seeing them in the night sky does not mean a warning of some disaster that will happen. So for the most part they are not related to disasters and are things to be enjoyed if you can see them in the night sky.
Comets are Comets and Asteroids are Asteroids
Superstitions surrounding comets and asteroids vary across cultures. In many ancient societies, such as the Chinese, comets were often seen as bad omens, foretelling disasters or the fall of rulers. In medieval Europe, comets were interpreted as harbingers of plague or war. Conversely, some Indigenous cultures viewed comets as a sign of change or renewal, often associated with significant events or transformations in the natural world.
Asteroids and Comets
There are no known asteroids or comets that have impacted Mercury.
Many cultures have superstitious beliefs about comets and asteroids. The Philippines do not seem to share superstitions of comets and asteroids.
Comets!
Comets
In Japan, the superstitions that are related to comet and asteroid is that it is death calling. People therefore are usually afraid to see the comets and asteroids.
No. Comets orbit the sun.
asteroids belt
It is possible for comets and asteroids to hit Earth, but they are extremely rare events.
no