The Goddard Amateur Radio Club (WA3NAN) was created by employees of the NASA Goddard Space Flight Center, in Greenbelt Maryland. The club provides a social circle for Amateur Radio operators associated with NASA and spaceflight interests. The club's primary functions are to provide a place for radio operation, experimentation, training / education, and emergency comm support.
Public REST API to track JWST's current status
API data source: https://www.jwst.nasa.gov/content/webbLaunch/whereIsWebb.html
Public endpoint: https://api.jwst-hub.com
Software that emulates the guidance computer of the Apollo space capsules.
Free datasets made available by Amazon. Stuff like an atlas of the Galactic Plane, NASA NEX data, the Human Microbiome Project, the Enron emails, Freebase, and the Marvel Universe's socialgraph. The Google Books Ngrams corpus is in here, also, alongside the Westbury Lab USENET corpus.