By the end, I was in sheer terror. Neat overall idea; movie feels like it changes genres towards something darker about halfway in (or progressively the whole time?). Science wasn't the focus, but the science of the nukes / flashing lights was a little strange. I thought the acting was pretty good, and Chris Evans was hot af in 2007. Visuals were occasionally stunning; the director achieved the effect they wanted with the sun as a god-like figure. I kind of wanted the movie to hurry up and end (mostly because I was terrified), but I think that just means it was a good suspense film.