#Space Time

[dailydavejading]

D139

[spacejamsdj]

[mindblowingscience]

Collapsed dead stars, known as neutron stars, are a trillion times denser than lead, and their surface features are largely unknown. Nuclear theorists have explored mountain building mechanisms active on the moons and planets in our solar system. Some of these mechanisms suggest that neutron stars are likely to have mountains. Neutron star "mountains" would be much more massive than any on Earth—so massive that gravity just from these mountains could produce small oscillations, or ripples, in the fabric of space and time. Mountains, or non-axisymmetric deformations of rotating neutron stars, efficiently radiate gravitational waves. In a study published in the journal Physical Review D, nuclear theorists at Indiana University consider analogies between neutron star mountains and surface features of solar system bodies.

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[noosphe-re]

FIG. 2: Chronological structure of Gödel’s universe. In this xyt-diagram a possible timelike worldline is depicted. A traveler T could move on this curve, propagating in his own local future at any given point. Beyond the horizon (gray cylinder) he travels into the past of an observer located at the origin. The worldline itself is a CTC, because the traveler departs from and returns to the origin at the same coordinate time t. For an observer at the origin, coordinate time and proper time coincide. The figure illustrates Gödel’s original idea to prove that there exist CTCs through every point in spacetime [1]. (Grave, Frank et al. “The Gödel universe: Exact geometrical optics and analytical investigations on motion.” Physical Review D 80 (2009): 103002.)

[calamarieater]

davejade doodle

[francesca-parita]

Labyrinth

A place beyond time, where space and infinity chase each other in a continuous cycle of movement and change, free from gravity.

[pxnky-prxmise]

💿🌌 SPACE TIME | DAVE strider x JADE harley + 📱💥 NICKELBARK | AVRIL thorpe x YIFFANY "YIFFY" LONGSTOCKING lalonde harley

i miss them a lot

-> Remember your daily click🍉! What you do can help thousands, especially in dire situations, your help is needed.

[emptymanuscript]

Ok, these are brilliant.

I do think you need that one above to make sense of the one at the bottom. Not sure you don't need the other one I just reblogged, too.

Because they are all in a series after all.

I STILL don't get it.

But I think I have a better idea of WHY I don't get it which is a step forward. I feel less like it breaks my brain and more like I don't understand the mechanism of this particular effect that causes this principle to be true. There's stuff to work with, here, instead of just throwing up my hands in despair of what they're even talking about.

[dogstomp]

Dogstomp #3047 - May 5th

Patreon / Discord Server / Itaku / Bluesky

[pratchettquotes]

"Ah, good," said the Patrician. "Now, I would just like to ask one or two questions, if I may?"

Goodmountain nodded.

"Firstly, is Mr. Cut-My-Own-Throat Dibbler involved in this enterprise in any significant managerial capacity?"

"What?" said William. He hadn't been expecting this.

"Shifty fellow, sells sausages--"

"Oh, him. No. Just the dwarfs."

"I see. And is this building built on a crack in space-time?"

"What?" said Gunilla.

The Patrician sighed. "When one has been the ruler of this city as long as I have," he said, "one gets to know with a sad certainty that whenever some well-meaning soul begins a novel enterprise they always, with some kind of uncanny foresight, site it at the point where it will do maximum harm to the fabric of reality." [...]

"What?" said Goodmountain.

"We haven't noticed any cracks," said William.

"Ah, but possibly on this very site a strange cult once engaged in eldritch rites, the very essence of which permeated the neighborhood, and which seeks only the rite, ahaha, circumstances to once again arise and walk around eating people?"

"What?" said Gunilla. He looked helplessly at William, who could only add:

"They made rocking horses here."

"Really? I've always thought there was something slightly sinister about rocking horses," said Lord Vetinari, but he looked subtly disappointed.

Terry Pratchett, The Truth* *For the anon who requested the bit about cracks in space-time from this excellent conversation in The Truth, where Vetinari demonstrates the Ankh-Morpork approach to urban planning.

[moeaneurysm]

🪐SPACETIME ⚙️

[spacejamsdj]

[patrickelvinart]

We are all part of the fabric of space and time.

pen drawing on board

Rosemead 2011

[noosphe-re]

Figure 5: Previous figure copied on top of itself. It goes on like this in both directions forever. m′,m′′,m′′′ are (time-like worldlines of) observers “equivalent with” the observer m living on t̄. (Németi, István et al. “Visualizing ideas about Gödel-type rotating universes.” (2009))

[lucasmanum]

The amazing universe.