Today I watched Cosmos "A Sky Full of Ghosts" This is a 40 min. documentary about how light, time and gravity effect our perception of the universe and also goes into detail about the mysterious and discoveries of black holes.
Here are some of the topics and quotes I took away from this episode:
Review: I thought this episode was amazing. I give it 5 stars. I really like the way Neil deGrasse Tyson explains things, even if the topic is really complicated he makes it so a average person could understand it and get a lot out of it. I am really interested in astronomy and the cosmos. I think it is entreating how Neil deGrasse Tyson almost takes you on a educational journey on this ship that travels through really beautiful graphic animations of the galaxy as he explains them. It is so fascinating to hear about what is beyond our world it really shows how little we know and how much more we could learn. Black holes are still mostly a mystery to scientists there is not much to go off of but I think this goes off of what they do know and makes educated guesses. Another thing I like about this documentary is it does not just focus on one topic which can get tedious and boring instead it briefly talks about the most important and interesting things about it. This show gives you perspective on our world compared to the grand scheme of the galaxy.
Here are some of the topics and quotes I took away from this episode:
- "There are no fixed places in the cosmos. Nature and everything in it is always in motion."
- The horizon is a illusion, because there are not edges on earth.
- The principles of reality
- No piece of mater can move at the speed of light.
- Gravity has been on earth for 4 billion years.
- Stars often have 'partner' stars that you can't see with your bare eye.
- Nebulas are interstellar clouds of dust, hydrogen, helium and other iodized gasses.
- If you could travel through a black hole you may end up in another place and time in our galaxy.
- The inside of black holes warp space and time.
- William Hershel came up with the concept of ghost stars, things beyond our galaxy that you can't see.
- "Photography is a form of time travel."
- "When you look up at the stars, you are looking at light that is thousands of years old."
- The earth spins 1,600 kilometers per. hr.
- Approximately there are more stars in the galaxy then grains of sand on the earth.
Review: I thought this episode was amazing. I give it 5 stars. I really like the way Neil deGrasse Tyson explains things, even if the topic is really complicated he makes it so a average person could understand it and get a lot out of it. I am really interested in astronomy and the cosmos. I think it is entreating how Neil deGrasse Tyson almost takes you on a educational journey on this ship that travels through really beautiful graphic animations of the galaxy as he explains them. It is so fascinating to hear about what is beyond our world it really shows how little we know and how much more we could learn. Black holes are still mostly a mystery to scientists there is not much to go off of but I think this goes off of what they do know and makes educated guesses. Another thing I like about this documentary is it does not just focus on one topic which can get tedious and boring instead it briefly talks about the most important and interesting things about it. This show gives you perspective on our world compared to the grand scheme of the galaxy.