NASA.gov brings you the latest images, videos and news from America's space agency. There are three key aspects to the cFS architecture: a dynamic run-time environment, layered software, and a component based design. NASA.gov brings you the latest images, videos and news from America's space agency. Get the latest updates on NASA missions, watch NASA TV live, and learn about our quest to reveal the unknown and benefit all humankind. This document describes application instructions for new members of the Goddard Toastmasters Club. Introduction. The 2019 NASA Fellowship Activity is seeking research or senior design projects and proposals that are independently conceived and pose significant contributions to a NASA Research Opportunity. Get the latest updates on NASA missions, watch NASA TV live, and learn about our quest to reveal the unknown and benefit all humankind. The core Flight System (cFS) is a platform and project independent reusable software framework and set of reusable software applications. core Flight System (cFS) Overview.