Twitter threw us all for a loop today when it announced it was shutting down its video sharing service Vine, about four years after it launched. The mobile app became popular for its short, 6-second clips, which were capable of being made with very little editing. Although users will be able to download all the videos they created, and the Vine website will stay online, the mobile app used to make Vines will be discontinued. We'll miss seeing all the explosions and cool science demonstrations. So we've compiled a list of our favorite science vines, from vinegar volcanoes to outer space. RIP.