Recently, scientists have discovered a comet with the largest nucleus in history. It is constantly flying towards the Sun and by 2031 it will reach the orbit of Saturn. It turned out to be Bernardinelli — Bernstein ‘s C/2014 UN271 . The diameter of its core is about 128 km, which is three times the size of Moscow within the MKAD at its widest point. C/2014 UN271 weighs 500 trillion tons, which is 100 thousand times more than ordinary comets of the Solar System.
Even a comet of the size of C/2014 UN271 will not be able to completely destroy our planet. This will require 20 thousand. times more energy. Therefore, the Earth will basically remain whole. However, the destruction will still be gigantic. In scale, they are thousands of times greater than the consequences of an asteroid impact about 66 million years ago, which led to the extinction of the dinosaurs.