Asteroids are continuously monitored by astronomers, and efforts are in place to identify and track any potential near-Earth objects that could pose a risk in the future. While there is always a chance of a significant asteroid impact, the likelihood of such an event causing global extinction is considered low. Moreover, there are ongoing initiatives to develop technologies that could potentially deflect or mitigate the impact of large asteroids if they were on a collision course with Earth.
As for supernovae, the nearest known star that could potentially go supernova and affect Earth is Betelgeuse, but it is located about 600 light-years away, which is a safe distance from any immediate threat.
It's important to note that various factors can influence the fate of humanity over the coming decades, including how we address challenges like climate change, pandemics, geopolitical conflicts, and technological advancements. Predicting the future with certainty is impossible, and humanity's survival will depend on our ability to adapt, address challenges responsibly, and make wise decisions for the future.
Continued scientific research, preparedness, and global cooperation are crucial to safeguarding humanity against potential threats and ensuring a brighter future for generations to come.