dulce_3t_decorum_3st
dulce_3t_decorum_3st t1_j8w2ca1 wrote
Reply to comment by Negative-Fan8460 in Shouldn't the universe be a hollow sphere ? by Negative-Fan8460
The short answer is, we don’t know.
I highly recommend you watch this lecture by Lawrence Krauss, “A Universe From Nothing”
dulce_3t_decorum_3st t1_j8w0tq4 wrote
Reply to comment by Negative-Fan8460 in Shouldn't the universe be a hollow sphere ? by Negative-Fan8460
> How did small atoms expand themselves to become size of galaxies.
They didn’t. Until roughly 380,000 years after the Big Bang, the entire universe was a thick opaque cloud of plasma of electrons and nuclei.
As the universe expanded, it cooled off enough to let the plasma become atoms, and the cosmos became transparent.
It is space itself that’s expanding, not the particles.
> I thought big bang was like a supernova where a massive amount of matter exploded.
This is a common misconception. A supernova is the explosion of a particular size star that occupies a point in space. The Big Bang was not an explosion, but the expansion of space.
Imagine infinite points packed together with infinite density. Those points occupy everywhere. There is no inside or outside.
Now imagine each of those infinite points moving further from its adjacent points, with the space between them expanding at an increasing rate.
For 380,000 years, the universe was entirely comprised of plasma but then it cooled enough that the electrons and nuclei combined to form atoms, molecules, dust, stars, planets and so on.
We have evidence of the above (post-380k years) since the discovery of the cosmic microwave background radiation (CMB).
>which external force was applied on universe to stretch it?
The best current hypothesis is Dark Energy, but we can only measure its effect. It falls outside the known laws of physics.
Edit: some relevant reading
dulce_3t_decorum_3st t1_j8vzo8i wrote
Reply to comment by Negative-Fan8460 in Shouldn't the universe be a hollow sphere ? by Negative-Fan8460
But the Big Bang didn’t happen in the same way as an inflating balloon. Your premise is false. The expansion happened everywhere. That is, each measurable point in space grew (and continues to grow) further from all other points in space. This is called inflation and expansion.
Edit: I should add that for this reason, every point is the centre of the universe relative to all other points. If you were able to teleport to the edge of our observable universe, you’d be at the centre of a similarly-sized observable universe “bubble.”
dulce_3t_decorum_3st t1_j8vtzss wrote
Reply to comment by MyDadsGlassesCase in TIL of the Storegga tsunami, a tsunami that struck the North Sea in 6000 BC submerging an area of land the size of MD by MyDadsGlassesCase
Also:
- Belgium
- Moldova
- Albania
- Armenia
- Guinea
- Lesotho
- Hawaii
- Taiwan
dulce_3t_decorum_3st t1_j8vsx9g wrote
Reply to comment by MyDadsGlassesCase in TIL of the Storegga tsunami, a tsunami that struck the North Sea in 6000 BC submerging an area of land the size of MD by MyDadsGlassesCase
Thanks, I’m not criticising you by the way. Just adding my 2c about the reference.
Now, as an African, I’ll look up the size of Azerbaijan :)
dulce_3t_decorum_3st t1_j8vsnsc wrote
Reply to comment by MyDadsGlassesCase in TIL of the Storegga tsunami, a tsunami that struck the North Sea in 6000 BC submerging an area of land the size of MD by MyDadsGlassesCase
I’m guessing 75% of Reddit (which is 50% Americans) don’t know that MD stands for Maryland, nor how big the state is.
dulce_3t_decorum_3st t1_j32zeay wrote
Reply to Missing NYC woman who vanished after New Year's Eve subway ride found safe by AmethystOrator
>Adamaruis Garcia, 21, returned home "in good health and condition" on Thursday, five days after she vanished, police said.
>No further explanation was shared regarding where she was while she was missing.
dulce_3t_decorum_3st t1_j1i1o4m wrote
Reply to comment by Maya_Hett in Center for Countering Disinformation publishes selection of Russian fakes made up on December 23. Espreso TV News Ukraine by IceLArk
At least 10% of society, by the looks of it
dulce_3t_decorum_3st t1_ixs99k7 wrote
Reply to 5-year-old boy rescued after huge python grabs his ankle and drags him into pool, father says by AmethystOrator
Drowning must be a terrifying way to go, but drowned by a python is next level hardcore
dulce_3t_decorum_3st t1_iu3limg wrote
There’s a saying about this… If only I could remember.
dulce_3t_decorum_3st t1_jaeswqs wrote
Reply to comment by theannotator in TIL exactly what it means to be “Hanged, drawn and quartered”: “…fastened to a hurdle, or wooden panel, and drawn by horse to the place of execution, where he was then hanged (almost to the point of death), emasculated, disembowelled, beheaded, and quartered (chopped into four pieces).” by CatsKittensCatsBunny
The /s surely isn’t necessary here?