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Created by professional astronomers for professional astronomers, but is a source of authentic data for in-class investigations -- recall that the column headings are in the separate README file.

Created by professional astronomers for professional astronomers, but is a source of authentic data for in-class investigations

This is the activity we did (will do) in class.

This is how I found the distance to the next closest star (Alpha Centauri) if the Sun were a basketball. Make a scale model of the Solar System and learn the REAL definition of "space."