How is the comet actually supposed to crash the Earth on May 25?

This picture was taken by the Hubble telescope on the comet '73 P / Schwassmann-Wachmann 3' which is rumored to split on May 25, crashing the earth and destroying mankind. It has already divided to about 40 pieces.

On this comet, which was rumored to split on the way and collide with the Earth, it was decided that on 25 May it will not crash the Earth. NASA Although it is said that although we encounter close proximity to the earth, it seems that it is about 20 times the distance from the earth to the moon. The distance is about 5.5 million miles, about 8.8 million kilometers. But it is quite close, so it seems possible to observe with telescope from 12th May until 28th May.

Photos: Comet fragments in close encounter with Earth | CNET News.com
http://news.com.com/2300-11397_3-6066281-1.html

In addition, NASA publishes information on comets and meteorites that approach the Earth, and you can see it on the following site.
NEO Earth Close Approaches
http://neo.jpl.nasa.gov/ca/

A lot of fragments are also posted on "73P / Schwassmann - Wachmann 3". It seems that it will be a very interesting astronomical show.

There is also a movie that shot the state of this comet.
http://anon.nasa-global.speedera.net/anon.nasa-global/hst_comet.mov
http://wm.nasa-global.speedera.net/wm.nasa-global/hst_comet.wmv