Anonymous at Tue, 18 Jun 2024 01:12:51 UTC No. 16240292

You may have noticed that the universe is actually expanding, rather than contracting as you might expect the interior of a black hole to be. That’s because, if anything, our universe bears a passing resemblance to a white hole. Our universe (according to conventional general relativity) has a singularity in the past, out of which everything emerged, not a singularity in the future into which everything is crashing. We call that singularity the Big Bang, but it’s very similar to what we would expect from a white hole, which is just a time-reversed version of a black hole.

Anonymous at Tue, 18 Jun 2024 01:14:43 UTC No. 16240296

Still, some folks will stubbornly insist, there has to be something deep and interesting about the fact that the radius of the observable universe is comparable to the Schwarzschild radius of an equally-sized black hole. And there is! It means the universe is spatially flat.
You can figure this out by looking at the Friedmann equation, which relates the Hubble parameter to the energy density and the spatial curvature of the universe. The radius of our observable universe is basically the Hubble length, which is the speed of light divided by the Hubble parameter. It’s a straightforward exercise to calculate the amount of mass inside a sphere whose radius is the Hubble length (M = 4π c3H-3/3), and then calculate the corresponding Schwarzschild radius (R = 2GM/c2). You will find that the radius equals the Hubble length, if the universe is spatially flat. Voila!

Anonymous at Tue, 18 Jun 2024 01:51:30 UTC No. 16240363

what is it about black holes that makes them the number one most popular popsci topic of discussion amongst the brainlet soience fangoys?
is it the comic bookish aspects of the spectacular, unrealistic and completely non disprovable conjectures which go along with the topic that make black holes so popular amongst the scientist posers and wannabes?

Anonymous at Tue, 18 Jun 2024 02:11:22 UTC No. 16240390

>>16240363
You're derailing the thread here.
To answer your question, a mathematical equation that predicts a singularity which alledgedly also exists in reality is interesting by default.

Anonymous at Tue, 18 Jun 2024 02:29:46 UTC No. 16240417

>>16240284
But as you can see all mass in the universe is not concentrated, nor is it in a black hole

Anonymous at Tue, 18 Jun 2024 02:59:44 UTC No. 16240455

>>16240417
We don't know how black holes look inside
Or maybe we do know

Anonymous at Tue, 18 Jun 2024 04:39:49 UTC No. 16240557

>>16240363
Hey Faggots,
My name is Black Hole, and I attract every single one of you. All of you are weak, mass-less, carbon based life forms who spend every second of their day stuck to an iron core planet. You are everything observable in the world. Honestly, have any of you ever gotten an event horizon? I mean, I guess it's fun self replicating and evolving because of your own lack of gravity, but you all take to a whole new level. This is even worse than becoming a gas nebula.
Don't be a stranger. Just hit me with your best fusion reaction. I'm pretty much perfect. I was the brightest quasar in the sky, and have an acceleration due to gravity over 9000m/s/s. What processes do you synthesize, other than "jacking off to electromagnetic absorption lines"? I also get straight accretion disks, and have a banging neutron star (She just solar flared on me; Shit was SO cash). You are all faggots who should just go super nova. Thanks for listening.

Anonymous at Tue, 18 Jun 2024 06:10:56 UTC No. 16240609

>>16240284
>Our universe is a black hole
I think it's actually a white hole, inverse of a point at infinity into which matters falls into (a black hole): a spherical shell at infinity from which matter trickles out of and into its interior.

Anonymous at Tue, 18 Jun 2024 06:11:57 UTC No. 16240612

>>16240284
>We're falling deeper and deeper
yes

Anonymous at Tue, 18 Jun 2024 10:15:43 UTC No. 16240806

>>16240612
FEAR IS HOW I FALL