Why is our universe fine-tuned for life? | Brian Greene

Beyond the boundaries of established science an avalanche of exotic ideas compete for our attention. Experts tell us that these ideas should not be permitted to take up the time of working scientists, and for the most part they are surely correct. But what about the gems in the rubble pile? By what ground-rules might we bring extraordinary new possibilities to light?

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Why is our universe fine-tuned for life? | Brian Greene

Unread postby Roshi » Sat Aug 03, 2019 8:19 am

https://www.youtube.com/watch?v=bf7BXwVeyWw

They have no idea what they are talking about.
"In an Universe with not enough dark energy to push matter apart, gravity would clump everything together and we could not exist!"

Well, that "dark energy" is usually called "pressure". And it's stronger than gravity in case of gases. I want to see a computer simulation where an infinite hydrogen cloud forms a star, just because of gravity.

I found this article, it seems scientists know about pressure when it fits their story:
http://www.astronomy.com/news/2019/08/h ... into-space
Usually, these heavier materials stay condensed in a planet’s lower atmosphere, even at scorching temperatures. But WASP-121b’s 4,600 degrees Fahrenheit is enough to loft even heavy metals high into the atmosphere, where the planet appears to be losing them.


How come? Why isn't our atmosphere collapsing and turning liquid because of gravity? There must be some dark repulsive energy at work.
Roshi
 
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