>>12707088Explosions don't really make things disappear like in the movies, they just break them up. The mass is still the same and it would hit Earth producing the same damage if not more (scattered instead of a single hit, both bad anyway).
If your intention is to deviate it, there are much better solutions but that takes a lot of time and planning.
In fact the real information here (which is usually lacking in amateur discussions) is how much time do we have.
For the record a dinosaur like event wouldn't wipe out humanity at all, just kill a lot of people especially in the aftermath because of possible food shortage and famine.
Not everyone would die though, humanity as a species would easily survive.