In the blog post "Out of this world aggregations," Colin Goodheart-Smithe introduces Pipeline Aggregations in Elasticsearch 2.0, a feature that extends the existing Aggregations framework to allow additional computations on aggregation results. These new aggregations enable users to perform calculations like determining the maximum average monthly price or tracking daily user sign-ups. The post demonstrates the use of various types of Pipeline Aggregations, such as Derivative, Max Bucket, Min Bucket, and Bucket Script Aggregations, using spacecraft trajectory data from NASA’s Helioweb site for Voyager 1 and Voyager 2. By plotting the radial distance and speed of Voyager 1, the post illustrates how these tools can reveal insights, such as changes in radial speed during close encounters with celestial bodies. The article highlights how pipeline aggregations can be chained to calculate additional metrics, like radial acceleration, and invites feedback on the current implementations while suggesting potential future enhancements.