Time travel explained ⏳ w/Neil deGrasse Tyson #science #space #astrophysics

[demux]

I'm very concerned about how people in the comments really don't understand what Neil is actually talking about. He's not making up anything. He's talking about Einstein's Theory of Special Relativity. Check it out folks.

[alesolos]

All time happens at once it just depends where u are at

[harriehelikopter]

If the spaceship comes back and a stranger steps into the spaceship, then the stranger steps into an interior that is still in the past.
Isn't it?

[moore]

I been in the past before now I'm in the present

[peceed]

Backward time travel is incosistant with thermodynamic laws and isomorphic with perpetuum mobile - it should be explained in this way more often.

[RedSpida]

Time is time regardless of where you are or how fast you’re moving. Paradox is a word they use when the math doesn’t jive. Theory is another one. Yet any study any where will show you 60 seconds is 60 seconds. The real question is would have is if you can travel at the speed of light how come you didn’t build a watch that could do the same 🤷‍♂️

[Cravinglogics]

No one from past has visited us either 😂

[roggekamp]

Since time does not really exist, what will you travel?

[Richard]

What the name of that sound he’s playing in the background

[unitorindustries]

Why would someone from the future say hi, it would never happen they are here to observe or maybe manipulate certain things

[niccovisconti]

You guys need to watch Star Trek The Voyage Home! They did it whilst bringing back two humpback whales named George and Gracie! ....and Spock had to guess the time variables. So ... if they can do it y'all can do it. 😏

[giovannigarcia]

The first line of this video is false. It assumes no one has traveled back, but states it as fact.

[chris-yvhp]

Thank you describing faster than light travel, but all of your equations depend on a constant.. a speed of light.. red light shift..

[chadkemp]

If rime travel does happen in the future we wouldn't know about it there for we wouldn't understand it. I do believe time travel happens but every day people will never get access to the technology.

[BlueCollarFishing]

If there is no time travel to the past then how would someone return from traveling to the future ? It now becomes the past

[MarkConway]

What if we view the light of a planet or galaxy from billions of years ago then travel to that planet or galaxy at faster than the speed of light traveling into the future of that planet.

[AquinasBased]

To go into the past u just go really sloowewwweeee and then u freeze

[memerauru]

U used the 600i and not my boy the carrack as ur space ship?

[proudmhinga]

Yah I'm travelling to my future, wacth me after 24 hours I would be in my Tomorrow 😊

[PaulSmith-vnlu]

Traveling to the future only isn't time travel.