During production of the Alfonso Cuaron’s current hit feature film “Gravity,” Jonas Cuaron, Alfonso’s son and co-writer, shot a short companion film titled “Aningaaq.” If you’ve seen “Gravity” then you’ll soon figure out the connection between the short and the feature and find the answer to a small mystery in the latter. Any further explanation would be a spoiler. If have not seen “Gravity,” the short companion movie is a beautiful stand-alone piece if filmmaking in its own right and worth a view.