The education science (or pedagogy based on scientific principles) of the learning of spectroscopy analysis in terms of critical thinking was examined in a community college setting with high school outreach and senor college transfer students enrolling in courses and/or projects. The most important discovery of science in the 20th Century was the atomic structure through spectroscopy analysis with applications to data collected in National Facilities such as Synchrotron Radiation Labs, NASA and NOAA. The capability to include online delivery-ready in post-COVID era is an important element. The critical thinking model of Leed University on problem solving posed on Youtube (2020) was found to be effective in the pedagogy of the learning of spectroscopy as problem solving when comparing the pre and post assessment data. In comparison, the NASA data was found to be the better example for the understanding stage, while the Synchrotron Radiation Lab data was a better example for the evaluation stage. The five strategies to further improve critical thinking of the "BBC Ideas/The Open University" posed on Youtube (2021) was also validated with positive assessment data. In comparison, the embrace-nuances strategy was found to be best illustrated by the NOAA data. A best practice of education science in which a single student project would spend 25% effort on data from all the three National Facilities, namely, Synchrotron Radiation Labs, NASA, and NOAA, is proposed to foster critical thinking development. The University of Hull detailed description of critical thinking, posed in seven Youtube videos (2020), and the transference of critical thinking education science to (and from) a Physics-mechanics introductory course are also discussed. [For the complete proceedings, see ED672800.]