Can you please help me find the title of this movie, from about 2010, in which hundreds of black alien spheres position themselves evenly around the planet. The humans are unsurprisingly curious, worried, and defensive. Most of the movie follows how people react to the presence of these structures, with building tension. The military even tries to blow some of the spheres out of the sky using nuclear missiles, but they have no effect. It's not a high-budget blockbuster, I don't think it had any A-list Hollywood actors, and was possibly from a Canadian filmhouse.
In the end,
an asteroid or meteor shower that would have obliterated life on Earth is stopped by the spheres, and they spheres depart, without any contact with the aliens.