While it's true that comets and asteroids occasionally impact Earth, it's important to note that such collisions are rare and generally occur over millions or billions of years. There is no significant evidence to suggest that a comet collision is imminent or pose an immediate threat to Earth.

Astronomers and scientists continuously monitor the skies for potential near-Earth objects (NEOs) that could pose a collision risk. NEOs are comets or asteroids whose trajectories bring them close to Earth's orbit. Monitoring efforts include space-based telescopes and ground-based observatories that track the movements and characteristics of NEOs.

In the event that an NEO is found to be on a trajectory that intersects with Earth's path, various mitigation strategies can be employed to address the potential threat. These strategies may involve spacecraft missions to deflect or alter the object's course, or in extreme cases, the use of kinetic impactors to divert the NEO away from Earth.

Rest assured, the scientific community takes NEO monitoring and mitigation very seriously, and significant efforts are made to identify and address any potential threats well in advance.