Dr. Mathur discussed so much more than only black holes, but his talk about black holes was what I thought was the most compelling. Taking an astronomy class in high school taught me a lot about the universe, but I knew almost nothing about any of the topics Dr. Mathur discussed in this presentation. Overall, I could tell that he was incredibly knowledgeable about what he researches and he very much enjoys teaching other people almost as much.
My favorite part of the discussion was the topic regarding where the universe may have originated, and where it could potentially go. I love the idea that it continually expands, but then starts to retract back upon itself until it is essentially a speck with every bit of density at one singular point. I think this is a very compelling theory, but it is also disappointing to know that we will (probably) never know the answer to this question in our lifetime. I was also impressed at how well he did at answering every question posed to him in complete detail.
I agree that this was a very informative and impressive talk. Sometimes the point you raised, that it will probably never be known in our lifetime, prevents me from spending to much time pondering or learning about the theories. It was nice to have Dr. Mathur bring this field to us in an understandable way.