Skylab is one of the world's most robust, white-labeled social media engagement platforms and was created to leverage the principles of the science of engagement. Its scientific foundation seamlessly integrates and operationalizes the research findings from such disciplines as cognitive-social learning, self-reinforcement and psychological gamification. Skylab serves as a model for a ... [Show full abstract] well-founded, scientifically-based social media app and gam-ification platform. Many authors have mentioned the science of engagement in the context of other social media platforms but few have defined the term and outside of vague references to motivation; very few scientific discussions and explanations of this ubiquitous term can be found online. A specific search for "the science of engagement" will not yield much of substance. This paper is an attempt to provide a scientific and theoretical context for "the science of engagement" by referencing Skylab's unique approach to integrating science into its highly-effective app and platform. Many businesses today are focused on developing web sites and/or apps which are designed to create a psycho-social platform for stimulating and/or optimizing engagement with their users, customers or subscribers. Engagement is a core principle of many internet-based companies. In fact, the greater the level of engagement, the more valuable a company becomes to both advertisers and investors. The rapid growth of social media advertising revenue is a testament to the economic value of engagement. There is a considerable body of evidence documenting the rapid increase in the spending on social advertising. A fourth-quarter report from data science and media technology provider 4C Insights found a 43 percent quarter-over-quarter increase and a 65 percent year-over-year gain in paid media spend. Spending on Facebook grew even more, with a 74 percent Year over Year increase. On Instagram, which saw user numbers rise to more than 600 million, advertising spend soared 138 percent from 2015; clearly, advertisers see the value of engaging their audiences as they transition to more platforms and networks. The problem is that there are very few, if any, formal scientific studies on "engagement"; it is one of those ubiquitous terms (gamification is another one) that is used frequently today but when pressed to explain how it works and, especially, why it works, most people would be hard-pressed to give a logically-coherent explanation. There is a good reason for this, it is because currently there is no "Science of Engagement", nothing tangible that someone can fall back on or use as a reference when trying to explain the term. But all is not lost. There is a legitimate scientific tradition which has existed since 1905 with a robust body of peer-reviewed scientific publications and scholarly textbooks that is a logical choice as the scientific backbone of "engagement".