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written by
Richard McCray and Andrew Koelemay
This applet illustrates the challenges of communicating with extraterrestrial civilizations. It shows a galaxy with a diameter of 100,000 light years. The user is able to control the average lifetime of communicating civilizations and the birth rate of such civilizations in the Milky Way galaxy. After hitting start, Earth appears and begins transmitting its signal. When Earth receives a signal from another civilization, a line appears connecting them. The applet will automatically pause when Earth ceases to communicate. Signals change color when a civilization ceases to exist.
This is part of a larger collection of applets by STEM Colorado focused mostly on topics in astronomy. Please note that this resource requires at least version 1.4.2_06 of Java.
ComPADRE is beta testing Citation Styles!
Record Link
<a href="https://www.compadre.org/portal/items/detail.cfm?ID=7925">McCray, Richard, and Andrew Koelemay. STEM Colorado: Galactic Communication. August 27, 2008.</a>
AIP Format
R. McCray and A. Koelemay, (2004), WWW Document, (http://scatter.colorado.edu/STEM-TPSoft/java/javaapps/civcomm2/CivCommApp2.jnlp).
AJP/PRST-PER
R. McCray and A. Koelemay, STEM Colorado: Galactic Communication (2004), <http://scatter.colorado.edu/STEM-TPSoft/java/javaapps/civcomm2/CivCommApp2.jnlp>.
APA Format
McCray, R., & Koelemay, A. (2008, August 27). STEM Colorado: Galactic Communication. Retrieved July 2, 2025, from http://scatter.colorado.edu/STEM-TPSoft/java/javaapps/civcomm2/CivCommApp2.jnlp
Chicago Format
McCray, Richard, and Andrew Koelemay. STEM Colorado: Galactic Communication. August 27, 2008. http://scatter.colorado.edu/STEM-TPSoft/java/javaapps/civcomm2/CivCommApp2.jnlp (accessed 2 July 2025).
MLA Format
McCray, Richard, and Andrew Koelemay. STEM Colorado: Galactic Communication. 2004. 27 Aug. 2008. 2 July 2025 <http://scatter.colorado.edu/STEM-TPSoft/java/javaapps/civcomm2/CivCommApp2.jnlp>.
BibTeX Export Format
@misc{
Author = "Richard McCray and Andrew Koelemay",
Title = {STEM Colorado: Galactic Communication},
Volume = {2025},
Number = {2 July 2025},
Month = {August 27, 2008},
Year = {2004}
}
Refer Export Format
%A Richard McCray %A Andrew Koelemay %T STEM Colorado: Galactic Communication %D August 27, 2008 %U http://scatter.colorado.edu/STEM-TPSoft/java/javaapps/civcomm2/CivCommApp2.jnlp %O application/java
EndNote Export Format
%0 Electronic Source %A McCray, Richard %A Koelemay, Andrew %D August 27, 2008 %T STEM Colorado: Galactic Communication %V 2025 %N 2 July 2025 %8 August 27, 2008 %9 application/java %U http://scatter.colorado.edu/STEM-TPSoft/java/javaapps/civcomm2/CivCommApp2.jnlp Disclaimer: ComPADRE offers citation styles as a guide only. We cannot offer interpretations about citations as this is an automated procedure. Please refer to the style manuals in the Citation Source Information area for clarifications.
Citation Source Information
The AIP Style presented is based on information from the AIP Style Manual. The APA Style presented is based on information from APA Style.org: Electronic References. The Chicago Style presented is based on information from Examples of Chicago-Style Documentation. The MLA Style presented is based on information from the MLA FAQ. |
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