Acknowledgments
The authors would like to thank the many Physics/Astronomy, Geo-science, and Education experts who provided
insight in defining and narrowing the important aspects of gravity. We would also like to thank the
Astrolrnr listserv participants who provided anecdotal information about common student misconceptions about
gravity, as well as the anonymous reviewer, whose detailed comments helped to refine the paper. And finally, we
would like to thank the Montana Space Grant Consortium for providing a graduate fellowship to one of the
authors (Williamson) in support of the present research.