Neil deGrasse Tyson Explains Faster Than Light Interstellar Travel

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Neil deGrasse Tyson Explains Faster Than Light Interstellar Travel

In this video, renowned astrophysicist and science communicator Neil DeGrasse Tyson explores the concept of faster than light interstellar travel.

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[Feral_Sage]

What is more likely to occur (because bending space would take a tremendous amount of energy) is that we will achieve "One-way" travel to distant stars using near-lightspeed travel. We are more likely to find a fuel source to accelerate over a larger distance than find an energy source to fold space-time. I could put all the math but it would bore people, so here is an example below.

Say we wanted to travel to Proxima Centuri. That star is our closest neighbor at 4.2 Light-years away. If we accelerated at 9.8 meters per second per second and wanted to reach a velocity of 259, 784 km/s (Time would dilate to a factor of two outside the ship while time remains relative to your speed, 60 seconds = 60 seconds on the ship while 60 seconds = 120 seconds outside the ship) It would take approximately 5 years and 252 days to get there (Your time) while 11 years and 139 days will have passed on earth.

The reason you would want to travel at a factor of two is because the closer to the speed of light you get, the more time dilates.
If we wanted to reach a velocity of 299, 972 km/s then you could reach the star in 5 years and 62 days. But the amount of time that will have passed on earth would be 2, 958 years and 343 days...

[TrippySpore]

The problem with warp drives is you can only gravity can warp space, and gravity propagates at light speed. So any ship warping space around it temporarily would still have to stick to the speed limit. If you could move or create black holes, you could change the distances involved, but again changes could only be made at sub-light speed. Also wormholes don't work like that - see Veritassium's recent video on Einstein's equations for a far better explanation of worm holes - this one is really just soft science-fiction.