I don't know why so many people say this is a good film. It's not, it's slow, boring and lacks a story or believable characters.
The director was spot on with his last film but this isn't even worth watching on a cold, wet and windy afternoon.
I was really bored after the first 30 minutes and towards the end I had given up watching it. If you enjoyed the pretty lights in close encounters then you may like the last 20 minutes of it.