OK I'm trying to figure what movie this is. One of the scene is where a father and son is looking into a telescope and the son sees an asteroid hit the moon. It was during a metoer shower that rareley happens.

Maybe the mini series "Impact" (http://www.imdb.com/title/tt1227637/)?

Yes that is it, thank you so much it has been bothering me for three days

You're very welcome.