Major Astrophysics discovery?

[Timelord79 (he/him)]

If there are billions of other universes in this bubble, some of them most likely did evolve with similar laws of physics. But that does not mean anything in that universe duplicated Earth so exactly that there are duplicate humans like on Fringe.

of course not. Billions of universes is not nearly in the required ballpark to ensure a kind of universe we are talking about here. I'm not sure googols of universes would be enough, but that would still be a low number when comparing with potentially infinitely many of them.

Edit: Numberphile explained it better than I ever could.

[yt]https://www.youtube.com/watch?v=8GEebx72-qs[/yt]

 

[gturner]

One of the researches who found the waves surprised professor Lindei by showing up at his house and telling him his inflation theory had been confirmed.

Daily Mail link w/video

 

[larryman]

Just realized that one of those alternate universes in the multiverse should have a NASA that builds flying saucers, rather than rockets and capsules. I want to move to THAT 'advanced' universe. Hopefully, their (united) Earth is governed by a single super-computer, super-artificial-intelligence like... "Colossus: The Forbin Project" - and not by human politicians!.

 

[rhubarbodendron]

Hmm, I like this alternative-universes-with-the-same-people theory. Maybe in one of them I can get the man of my dreams (who in this universe is married to the woman of his dreams which is - alas - not me).

 

[PurpleBuddha]

Hmm, I like this alternative-universes-with-the-same-people theory. Maybe in one of them I can get the man of my dreams (who in this universe is married to the woman of his dreams which is - alas - not me).

Oh you know how those always turn out. After years of only being able to communicate to the man of your dreams from an alternate universe by voice chat, you finally get the chance to meet and embrace only to discover too late that he is made of anti-matter.

Trust me, those out of this world men out there are nothing but trouble.

 

[rhubarbodendron]

Wouldn't such a matter/antimatter explosion cause someting like the big bang? Or would that require 2 bigger masses?

 

[Timelord79 (he/him)]

Wouldn't such a matter/antimatter explosion cause someting like the big bang? Or would that require 2 bigger masses?

I don't see how.
An equal amount of matter and antimatter would completely annihilate each other and release energy, but it shouldn't cause a catastrophic spacetime expansion, should it?

 

[Metryq]

Antimatter has been manufactured in the lab, and no new universes have suddenly appeared, expanding and knocking over the walls of the building. (High energy particle physics is expensive enough without doing that.)

 

[rhubarbodendron]

^^ yes, but wouldn't that sudden energy burst have an effect like an explosion?

^afaik only single particles have been manufactured. A person would equal something around 200 lbs which'd be a hell of a lot of particles and hence a much larger matter/antimatter reaction.

 

[gturner]

A 200 pound matter-antimatter explosion would be the equivalent of 2 gigatons of TNT, vastly more than a 200 pound H-bomb.

 

[Drone]

I have long been laboring under the impression that some constructs in the multiverse may be only mere centimeters away from us, though transit of course is dependent on factors far removed from plain physical distance.

Does this concur with what some physicists have actually posited?