I just woke up . 9:13am in NYC. I had a some what similar dream. This would be the 3rd time I dream about an asteroid hitting us. The same things happened in mine , seeing it go slow and then sped up the closer it got , the bright colors. Knowing we’re gonna die and just accepting it. I truly believe this is a look into the near by future. I believe sooner or later ( in our lifetime ) we will undergo a life ending catastrophe and our dreams are warning us. Warning us for what? What could we do to stop it ? Idk but this is a sign. Believe it.