if you go in a black hole you may be transported to another dimension and leave out a white hole

Try it

just need a fast spaceship, for science

How fast?

super fast, faster than the speed of light even

okay did some quick maff

if the closest black hole is 1500 light years away, this is almost 9 quadrillion miles

I will need to be going something like 14 billion miles per hour to get there within 80 years

Time slows down as you speed up. So even without wormholes, if you can solve the propulsion problem you actually have plenty of time to get anywhere in the galaxy in your lifetime, assuming you're not already old.

Edit: didn’t see tacky’s post 2 above mine before responding. Yeah time dilation will let you get near a black hole if you can get to pretty close to the speed of light. Complicated mission to coordinate though- 1500 years of comms delay means we won’t know if they got there for 3000+ years.

Pretty good book about the tradeoffs of that- the Forever War (Haldeman; won the first Hugo or Nebula I think). World changes fast while you travel. At 99.9% light, going to Alpha Centauri and back might take just about a month & change (I think time dilation factor here is 70-ish and Alpha Centauri is like 4 ly away), but 4 years of time passing for everyone else on each one way trip will make things complicated. Imagine a world where time just went at vastly different rates for different people, and their communication still took years. It’d be a very tough world to plan anything in. I guess in a way time would just speed up for all spacefaring people as a group. Tons of downstream problems of solving propulsion even once we get to it being just an engineering problem, which it’s not quite yet.

Plus space is big and generally getting farther apart. Not that many star systems even within 400 light years (5-6 years of travel time): https://en.m.wikipedia.org/wiki/List_of_star_systems_within_350–400_light-years

Our own galaxy is 52k light years wide so even at 99.99% of the speed of light we’d be a far cry from stuff like Star Trek. Lots of baby steps left. Maybe within our lifetime we can set up a functioning economy with at least one non-terrestrial component.

Edited 12/9/2024 03:51:09

fizzer with the answer to immortality. did Einstein believe in wormholes? he hasnt been wrong about much so far haha

I was thinking.. space is big... and if you look out there is a horizon, like an event horizon of a black hole. are we inside of a black hole already?

https://youtube.com/shorts/4Kn9vIS1jGw?si=a42bbvfWAXXJI9Gd

https://youtube.com/shorts/Qvzs89v4WNA?si=TurUYJnvI2kwc0l9

Are we inside a black hole?

Well, you can have all sorts of fun by comparing horizons, but once you step out of this first easy step and start asking the difficult questions, then you will realise how far fetched this idea is. Like what about the black holes inside a black hole?

Edited 12/10/2024 06:20:17

Black holes increase entropy by absorbing matter and energy, adding to the universe's disorder.

White holes in contrast are believed to do the exact opposite, spitting matter and energy out, which would decrease entropy. But that would possibly violate the second law of thermodynamics. It's not a surprise we've never once discovered a single white hole.

Besides even if they were real they would be incredibly unstable because any interaction with matter nearby would probably just cause them to collapse.

Edited 12/10/2024 21:17:46