Detail Page

published by the NASA Glenn Research Center
This NASA website dispels the myth that there is no gravity in an orbiting spacecraft.  It includes the classic diagram of a cannon fired from a mountaintop that gives the projectile various velocities. The site explains how a drop tower is not an "anti-gravity device."
Subjects Levels Resource Types
Classical Mechanics
- Gravity
- High School
- Lower Undergraduate
- Reference Material
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Additional Information
Image credit: NASA; image source; larger image This resource was featured by the Physics To Go collection from July 1, 2011 until July 15, 2011. View the feature here!

Access Rights:
Free access
© 2007
Use of images and text may require specific permission from the NASA Glenn Research Center.
Microgravity, astronaut, gravity, space, weightless
Record Creator:
Metadata instance created June 29, 2007 by Andrew Coughlin
Record Updated:
May 7, 2008 by Lyle Barbato
Last Update
when Cataloged:
March 17, 2006
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Record Link
AIP Format
(NASA Glenn Research Center, Cleveland, 2007), WWW Document, (
What is Microgravity?, (NASA Glenn Research Center, Cleveland, 2007), <>.
APA Format
What is Microgravity?. (2006, March 17). Retrieved December 17, 2018, from NASA Glenn Research Center:
Chicago Format
NASA Glenn Research Center. What is Microgravity?. Cleveland: NASA Glenn Research Center, March 17, 2006. (accessed 17 December 2018).
MLA Format
What is Microgravity?. Cleveland: NASA Glenn Research Center, 2007. 17 Mar. 2006. 17 Dec. 2018 <>.
BibTeX Export Format
@misc{ Title = {What is Microgravity?}, Publisher = {NASA Glenn Research Center}, Volume = {2018}, Number = {17 December 2018}, Month = {March 17, 2006}, Year = {2007} }
Refer Export Format

%T What is Microgravity?
%D March 17, 2006
%I NASA Glenn Research Center
%C Cleveland
%O text/html

EndNote Export Format

%0 Electronic Source
%D March 17, 2006
%T What is Microgravity?
%I NASA Glenn Research Center
%V 2018
%N 17 December 2018
%8 March 17, 2006
%9 text/html

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

The APA Style presented is based on information from APA Electronic References.

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