Paula Hendry, and
This site, from the Space Telescope Science Institute, provides answers to many basic questions about black holes. Questions including what black holes are, how they are created, and what the evidence is for their existence are answered. The site also provides a description of the role of the Hubble Space Telescope and the Advanced Camera for Surveys.
Steinberg, D., Hendry, P., & Helms, G. (2004, January 8). No Escape: The Truth about Black Holes. Retrieved April 23, 2017, from http://amazing-space.stsci.edu/resources/explorations/blackholes/teacher/sciencebackground.html
Steinberg, D, P. Hendry, and G. Helms. No Escape: The Truth about Black Holes. January 8, 2004. http://amazing-space.stsci.edu/resources/explorations/blackholes/teacher/sciencebackground.html (accessed 23 April 2017).
Steinberg, Daniel, Paula Hendry, and Greg Helms. No Escape: The Truth about Black Holes. 8 Jan. 2004. 23 Apr. 2017 <http://amazing-space.stsci.edu/resources/explorations/blackholes/teacher/sciencebackground.html>.
%A Daniel Steinberg %A Paula Hendry %A Greg Helms %T No Escape: The Truth about Black Holes %D January 8, 2004 %U http://amazing-space.stsci.edu/resources/explorations/blackholes/teacher/sciencebackground.html %O text/html
%0 Electronic Source %A Steinberg, Daniel %A Hendry, Paula %A Helms, Greg %D January 8, 2004 %T No Escape: The Truth about Black Holes %V 2017 %N 23 April 2017 %8 January 8, 2004 %9 text/html %U http://amazing-space.stsci.edu/resources/explorations/blackholes/teacher/sciencebackground.html
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