Additional online reading Welcome to BFSU: › Forums › Volume One › Learning Progression “D”: Earth and Space Science › Lesson D-2. Day and Night and the Earth’s Rotation › Additional online reading Tagged: Enhancement This topic has 0 replies, 1 voice, and was last updated 10 years, 1 month ago by Bernard Nebel. Viewing 0 reply threads Author Posts November 8, 2014 at 12:30 pm #407 Bernard NebelKeymaster Short biography of Nicolaus Copernicus http://starchild.gsfc.nasa.gov/docs/StarChild/whos_who_level1/copernicus.html Short biography of Galileo http://starchild.gsfc.nasa.gov/docs/StarChild/whos_who_level1/galileo.html Author Posts Viewing 0 reply threads You must be logged in to reply to this topic.