The Astronomy Center has provided educational resources to introductory astronomy educators since 2003. Over the past 20 years, the rapid pace of discovery has rendered some of our linked resources obsolete. Thus, the Astronomy Center will be decommissioned on March 1, 2022. Our highest quality resources will be retained on


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written by Thomas. T. Arny
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.
Subjects Levels Resource Types
- Astronomy Education
General Physics
- Collections
- Lower Undergraduate
- Collection
- Instructional Material
= Problem/Problem Set
= Tutorial
Intended Users Formats Ratings
- Learners
- Educators
- text/html
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Free access
Has a copyright or other licensing restriction.
gravity, orbits, question, quizzes, scientific notation, seasons, stars, study, velocity
Record Creator:
Metadata instance created February 18, 2004 by Patricia Monahan
Record Updated:
August 17, 2020 by Lyle Barbato
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Record Link
AIP Format
T. Arny, , WWW Document, (
T. Arny, T. Arny's Astronomy Tutorials, <>.
APA Format
Arny, T. (n.d.). T. Arny's Astronomy Tutorials. Retrieved November 30, 2022, from
Chicago Format
Arny, Thomas. T.. T. Arny's Astronomy Tutorials. (accessed 30 November 2022).
MLA Format
Arny, Thomas. T.. T. Arny's Astronomy Tutorials. 30 Nov. 2022 <>.
BibTeX Export Format
@misc{ Author = "Thomas. T. Arny", Title = {T. Arny's Astronomy Tutorials}, Volume = {2022}, Number = {30 November 2022}, Year = {} }
Refer Export Format

%A Thomas. T. Arny %T T. Arny's Astronomy Tutorials %U %O text/html

EndNote Export Format

%0 Electronic Source %A Arny, Thomas. T. %T T. Arny's Astronomy Tutorials %V 2022 %N 30 November 2022 %9 text/html %U

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The AIP Style presented is based on information from the AIP Style Manual.

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