Our universe may have a twin that runs backward in time

[Judi Lynn]

By Paul Sutter published about 9 hours ago

An anti-universe running backwards in time could explain dark matter and cosmic inflation.



A wild new theory suggests there may be another "anti-universe," running backward in time prior to the Big Bang.

The idea assumes that the early universe was small, hot and dense — and so uniform that time looks symmetric going backward and forward.

If true, the new theory means that dark matter isn't so mysterious; it's just a new flavor of a ghostly particle called a neutrino that can only exist in this kind of universe. And the theory implies there would be no need for a period of "inflation" that rapidly expanded the size of the young cosmos soon after the Big Bang.

If true, then future experiments to hunt for gravitational waves, or to pin down the mass of neutrinos, could answer once and for all whether this mirror anti-universe exists.

More:
https://www.livescience.com/mirror-universe-explains-dark-matter

[2naSalit]

1. I knew it!

[Pobeka]

2. Holy Benjamin Buttons Batman! n/t

[sanatanadharma]

3. A Universe running time backwards, awkward

A Universe running time backwards, awkward.

Effects would precede causes.

[old as dirt]

12. Something like this?

A Universe running time backwards, awkward.

Effects would precede causes.

Entropic Time (Backwards Billy Joel Parody) | A Capella Science

[leighbythesea2]

4. Read a book

Called Times Arrow. Time went backwards. Fascinating story, & made you think.

[keithbvadu2]

5. Theories

[Angleae]

6. Didn't I see this on Star Trek?

Yes I did. The animated series episode "The Counter Clock incident."

https://en.wikipedia.org/wiki/The_Counter-Clock_Incident

[PufPuf23]

9. There is a Philip K Dick novel,

Counter Clock World.

>>Time has begun moving backward. People greet each other with “goodbye,” blow smoke into cigarettes, and rise from the dead. When one of those rising dead is the famous and powerful prophet Anarch Peak, a number of groups start a mad scramble to find him first—but their motives are not exactly benevolent, because Anarch Peak may just be worth more dead than alive, and these groups will do whatever they must to send him back to the grave.

[Tadpole Raisin]

7. So that means somewhere in this universe I am getting younger, right?

[Javaman]

8. so rising from the dead is good and birth is sad. freaky.

and if you rise from the dead, do you already know everyone and have all your lifes memories?

would their still be a religion based on someone dying on a cross?

with war does everyone get unshot?

[PoindexterOglethorpe]

10. Interesting.

Paul Sutter has a couple of books out there that I highly recommend. "Your Place in the Universe" and "How to Die in Space." I have read the second, one, have the first one and will get to it at some point. I really, really recommend "How to Die in Space" in no small part because it's very clear, concise, and fact-filled about how dangerous it really is once you get off this planet. He also makes it clear that using wormholes to travel vast distances just isn't going to be possible. Oh, and he's not just some dry scientist. He's very snarky and there's lots of humor in at least that second book.

I would really like to meet him some day.

[SCantiGOP]

11. George Carlin had a great routine on this concept

You start out old and confused, end up years later as a kid who just gets to play and becomes less and less aware of what's going on, and then finally.............you end as an orgasm.

[Uncle Joe]

13. So with Marty and Doc in this alternate universe

it would be "Forward to the Past!" but we wouldn't know about it at this stage because that reality hasn't reached 1885 yet for the full trilogy.

Fascinating

Thanks for thread Judi Lynn