Directions I can only count a student's first post because everyone else's work is visible after you post the first time. Google Docs and other externally editable documents are not accepted. Unlike most discussions, for this assignment you must attach your work in either a docx or pdf format. Do not embed your words as an image (jpeg, etc) inside the document. Please affirm that what you have written is in your own words, not those of another person or artificial intelligence. Failure to use your own words results in zero points. Watch at least the first two sections of the video, "Black Holes" from the BBC. This is an older video but informative and interesting, I think. Video in three sections: Black Holes Section 1 Black Holes Section 2 Black Holes Section 3 If there are a lot of people accessing the video at once, you may need go to the Youtube version: Link to Black Holes video on Youtube You can also go directly to my website to access the video. You need to be in your CCSF account to access the videos, and use the Chrome browser. Black Holes Develop a set of four (4) Teaching Questions on Black Holes from what you learned in the video, numbering them and writing each on its own line. Write out the questions themselves and your answers in your own words. Each question should have answers at least four (4) sentences long. (I will not be grading your grammar or spelling but please try to be clear.) In order to receive full credit, the video source time must be included and your TQs must be detailed. List your times, where in the video you found the information, in a form like this: Video 10:50 to 11:20 minutes. Be sure that I can tell you have fully studied the Black Holes video when I read your TQs. If all your questions are from the first video and none from the second, that would be a problem. If you wish, you can use the Content Slides and recommended textbook to assist your learning. For example, you could write: Video 10:50 to 11:30 minutes and Content Slides page 12. Here is a made-up example. Question: "How would quintessence remove the need to fine-tune the cosmological constant at the beginning of the Universe?" Answer: Quintessence was one possible form of Dark Energy. Unlike Dark Energy in the form of the cosmological constant, which is constant, quintessence has an energy density that can vary in time and space. The cosmological constant must not have been too strong ever in the history of the Universe in order for galaxies to have formed. But many quintessence models naturally don't become strong until matter and radiation density are equal, therefore always allowing galaxy formation. Yet, quintessence has been ruled out. Video 45:35 to 47 minutes and Textbook page 427.