I need help finding the name of a movie!

FOUND THE NAME OF THE MOVIE

KNOWING

Sorry if this is the wrong subreddit, and yes I've already Google searched it.

Anyways, the movie is about the end of the world. It focuses on a man who recently met this woman who worked for nasa, and found out that she had 2 kids. They get closer and then she finds out the world is going to end because of some space shit and the only way they could survive is like going way down into a cave. Then like halfway through they go to a gas station and people are raiding the gas station, and yeah thats all I can remember..

I think the film was made in the late 2000's

Sorry if this was wayy to vague.

Thanks in advance!