Thomas Arny's collection of online tutorials at the University of Massachusetts span a range of astronomy-related topics. Tutorial subjects include gravity, escape velocity, seasons, orbits, the properties of stars, and galaxies. Each tutorial has questions interspersed to allow students to assess their learning about the presented subject.
%0 Electronic Source %A Arny, Thomas. T. %T T. Arny's Astronomy Tutorials %V 2013 %N 23 May 2013 %9 text/html %U http://donald.phast.umass.edu/~arny/indextut.html
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