Neil deGrasse Tyson’s Guide To Time Travel — StarTalk 101

I love the idea that no matter what you do in the past, it will not change anything. You go back and change something in history, return back to your original time. When you get back to your original time you notice nothing has changed because what you went back into the past has already happened before you left, because you left back in time to change it.

The other side of the The Grandfather Paradox. Look at Fry from Futurama. Another time travel paradox. You travel 30 years into the future to visit yourself only to find out you've been missing for the past 30 years.

If you could travel in time, where or when would you go?

I love how Neil constantly retells the same anecdotes, examples, or analogies when explaining a point to someone different each time but always with a consistent level of enthusiasm and chuckling.

Brian May of Queen wrote a song about this many years ago. It's called 39 and it brings a tear to your eye...

Two channels I love, have uploaded videos related to time travel on the same day. Science Asylum, and Star Talk.

I have already traveled back in time. I flew from Australia to the US and I arrived in the US on the same day I left but it was earlier in the day than when I left. Only a few hours before I left but I also traveled for 17 hours. I would not advise trying to travel back in time the other way around though, you will wind up in the future.

i love neil sm, i can listen to him for hours

Something interesting that was brought to my attention recently...if you travel back in time, you would have to account for the space in which the earth has traveled since. So if you travel back to the 1950s you would just land in empty space because the earth was in a different location around the sun from when u first traveled

I love the last one the most where Neil is talking about the 5th dimensonal scenes in Interstellar. Really cool :)