Because explosions solve everything

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Do not compare this movie with Day After Tomorrow. Granted DAT was awful and woefully inaccurate it was at least entertaining and there was no cheese about people being able to save the earth. If the writers of this awful mini series had done DAT they would have fired nukes at the weather patterns and restored the Arctic and Antarctic.

Well, i don't know if it applies to this movie. But i remember reading that in real life, one theory of stopping a meteor or astroid was to strike the side of it with a missile. Not to destroy the whole thing, but to change it's trajectory enough so that it misses the earth. Obviously there would still be smaller meteors, but most of them would burn up in the atmosphere.

Well, spoiler, they didn't blow it up. I guess you missed out.

They mention several times that it has to be hit before it reaches a certain point to keep the debri from hitting. One of them even mentions that some fallout is inevitable.




**Skin that Smokewagon and see what happens!** Tombstone

This is a very old post, but since my wife and I watched this on Netflix last night, I thought I might share a thought.

Generally, deflecting a large meteoroid works best if it is done far from Earth. At a distance only a slight deflection will result in a miss. If the meteoroid approaches too closely deflection becomes difficult to impossible. Personally, the ending

SPOILERS, just in case,

where the second half is deflected at the last moment is likely impossible. They depicted it as entering the atmosphere. That close a deflection of nearly ninety degrees would be necessary and I don't see any way to achieve that.

Now, blowing up the meteoroid does have repercussions. You will get a lot of debris which is going to hit earth. However, so long as the size of the debris has been reduced, you will be better off. Debris will cause a lot of damage. Many people would be killed. But, many would survive. If either half of Kassandra had struck earth it would have been an extinction level event. Most life would be killed (likely ninety percent or more) Most large life forms would go extinct. Some of the smaller might survive. (and it is possible that all life would die, leaving nothing.)