Help! what is this movie?!

It was on the sci-fi channel in the 1990's, it reminded me of Stephen king's 1980's-1990's movies!. However, I know that it was not a stephen king movie!. the plot of the movie went something like this: Some type of comet or celestial body hit earth and wiped out nearly everyone!. the only people who survived were surrounded by something-i forget what- and the movie is essentially the survivors wandering around trying to find eachother and find out why they survived, and what caused it all to happen!.

If you have no idea what I'm talking about then if you could point me towards a website that might help me in my quest it would be very apperciated!. Thank you!Www@Enter-QA@Com

---

---