Why did the dinosaurs all die?

Question

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Answer 1

Not all the dinosaurs died, only the non-avian ones were completely wiped out.

Answer 2

basically everyone thinks its because of a giant meteor that crashed to earth and killed/starved all of the dinosaurs, but u never know

Answer 3

The meteorite theory is  just one competing theory that explains all the observations.  Here's another on:

Answer 4

I believe it was the result of a titanic meteoric impact that was so big it literaly moved the earth from it's once stable orbit.

Answer 5

No one knows, but most people it was a meteorite that struck 65 million years ago