Your link is a modern article based on what happens in the present is the key to the past. This isn't correct as we still have soft tissue in dinosaur fossils. It means that the fossils aren't 65 million years old. We can still do radiocarbon dating on these fossils. If they were 65 million years old, then the carbon would be gone.
Moreover, nobody was there to see what happened 65 million years ago. You can't even explain how you know that this one asteroid killed all the dinosaurs. You could be 300,000 years off and be wrong haha. What stories do we see throughout history of asteroids hitting Earth and killing animals or people? Do you have any historical evidence of other asteroids hitting the Earth in ancient times? Otherwise, you are just linking fairy tales that you can't even explain because it is too difficult for you.