What is a black hole? What is the evidence that black holes actually exist, and where in the Universe do we find evidence of their existence?

You are welcome to include pictures. However try to ensure that they help to illustrate the argument presented in the essay and are not mere adornment.

Essays are expected to show evidence of researching the topic beyond the
material presented in the lectures and textbook. The sources you use (websites,journal articles, books) should be referenced. You should consistently use one of the standard reference styles.

Essays will be graded on:
o Degree of understanding of the topic
o Quality and depth of research
o Clarity of presentation
o Originality

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