Eric Walker added National Radio Astronomy Observatory - Wikipedia to National Radio Astronomy Observatory (NRAO)

Eric Walker added The Collapse of Puerto Rico’s Iconic Telescope | The New Yorker to a number of topics

Eric Walker added National Radio Astronomy Observatory - Wikipedia and The Collapse of Puerto Rico’s Iconic Telescope | The New Yorker to National Radio Astronomy Observatory (NRAO), and added National Radio Astronomy Observatory (NRAO) to Observatories and Charlottesville, Virginia

Eric Walker added 2017-08 Unite the Right rally and National Radio Astronomy Observatory (NRAO) to Charlottesville, Virginia, and added Charlottesville, Virginia to Cities in Virginia

Eric Walker added a number of topics to Observatories, and added Observatories to Telescopes, observatories and telescope networks