You are assuming an influence that is not there.
Yes, that would be magic.
Maybe this is where the energy came from... not magic, NASA blew it up.
Intelligence Brief #312 ISON apparently destroyed on purpose
This fine bit of mind warping at least supplies a theory to account for the required energy necessary to produce your Sky Is Falling scenario.
By the way, don't you think the use of the word 'shattered' is a bit misleading? Unless of course you somehow believe that a comet is a solid chunk of stuff, instead of a bunch of rocks held together with ices of various composition that upon venturing too close to the sun came unglued...
But again, if NASA blew Ison up, there's your required energy. Correct?
And ... what is your source for the information you cite about NASA cameras pointing the wrong direction/conveniently not working? So far a search only finds this mentioned on nutjob sites.
You sure you don't listen to Alex Jones? Art Bell?