Why do we care about gravitational waves?

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2. Absence of evidence that the speed gravitational wave which is the same speed as speed of light 'c'
3. there is only 1 time, and that is now. I don't see how mass and gravity can shift time or make ripples as you call them. it's not like you can make experiments to replicate this so call wave that was detected. maybe the whole notion of space-time is incorrect.
4. Why can't NASA use the data it has measuring the distance to the Moon to detect gravity waves?
5. Thank you for the interesting video! I also have a request: Would you please work on a uTube video about how water can boil at much lower than normal temperature? I'm asking this because when I was working on a relatively high rpm centripetal water pump I observed air bubbles in the water flow output of the pump as well as a cyclic output of higher and lower water volume output from the pump. At first I thought there must be an air leak in the water supply to the pump. However when the pump was stopped, there was no water leaking, so I reasoned that it was unlikely that I had an air leak. Then I had another idea, which I believe is the correct answer to the question of where the air bubbles were coming from. The water behind the impeller blades in the pump is at a much lower pressure and is actually boiling at far less than the 120 degrees Fahrenheit that people often think water boils at. When I told this to my boss, he looked at me like I was crazy because "everyone knows the water is no where near hot enough to boil" and I became quickly stifled. Perhaps a well done video presentation could shed some insight into the physics of boiling water.
6. The first ever telescope that does not rely on any type of light.
7. "Sound does not travel through space."
   Actually, according to quantum mechanics, particles disappear into nothing and appear out of nothing, and these particles vibrate, thus creating sound with a frequency we cannot hear.
8. can i see the full Warping spacetime animation ?
9. How do they rule out waves of ions from the sun.?
10. though gravitational waves travel at the speed of light is it possible anyhow to see it?
11. I think it's very important, it shows empty space isn't "nothingness" but a medium energy and matter sit in, like ripples in a water medium.
12. Dianna, Thank you for sharing your infectious excitement for physics discovery, which gushes unrestrained from this video. You, and your videos, embody the beloved Henri Poincare quote: "The scientist does not study nature because it is useful, he studies it because he delights in it. If science were not beautiful, it would not be worth knowing..." You're a treasure for science outreach, and you're making a tremendous difference. I am honored to add your videos to my playlists. Please keep up the great work. Boyd Edwards, Professor of Physics, Utah State University. P. S. If you see Emily Calandrelli, please say "hi." She was a student in my honors physics class at West Virginia University.
13. Would these waves affect time? Recently I've experenced things such as the IR remote for my tv, a light up key chain, among other things moving about .5 seconds slower than they should have moved! Am I alone in this?
14. Hmmm... How did they determine it was from 2 black holes that merged together? I would have thought that space would have been polluted with gravitational waves coming from all different directions... What happens when two waves arrive at the same time would there be a chance that the machine won't detect it because they cancelled each other out? Hmmm... interesting...
15. hi there! I have a strange question & dont know who to ask, -here goes: is the moon So large, it is physicaly imposible for earth to caught it?
16. Much space for imagination!
17. This video explained nothing about why we care about gravitational waves.
18. Is this the reason why we now have a ninth planet?
19. You have beautiful hair. Love the red. Thanks for the video...
20. Are gravitational waves etheric?