#time-travel

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fromInverse
1 day ago

'Project Hail Mary's' Relativity Problem Is More Complicated Than You Think

"I've done a lot of time-dilated travel." This statement encapsulates the essence of Grace's journey, highlighting the profound effects of traveling at speeds approaching light, where time for the traveler slows down significantly compared to those remaining on Earth.
OMG science
Philosophy
fromThe Conversation
4 days ago

Are multiverses real? An astrophysicist explains why it depends on how you define 'real'

The existence of the multiverse remains hypothetical, with no direct sensory evidence but potential indirect effects.
#quantum-mechanics
Science
fromArs Technica
6 days ago

Getting formal about quantum mechanics' lack of causality

Superposition of temporal order is a fundamental feature of quantum mechanics, despite existing loopholes in current experiments.
Philosophy
fromwww.scientificamerican.com
2 weeks ago

A 100-year-old theory might explain what's wrong with quantum mechanics

Pilot wave theory, developed by Louis de Broglie a century ago, potentially resolves quantum mechanics' paradoxes by describing particles guided by attendant waves rather than existing in superposition.
OMG science
fromBig Think
4 days ago

The Universe has changed by the time you finish this sentence

The Universe undergoes profound changes over time, despite appearing static on human timescales.
#black-holes
fromwww.scientificamerican.com
1 week ago
OMG science

Is the universe swarming with tiny black holes from the beginning of time?

Black holes warp space and time, and can be formed by collapsing massive stars or merging neutron stars.
fromFuturism
2 weeks ago
OMG science

Scientists Say Something Bizarre Is Hiding Inside Black Holes

Mathematicians and physicists propose that prime numbers could describe black hole interiors, offering a novel mathematical framework for understanding these cosmic mysteries.
OMG science
fromFuturism
2 weeks ago

Scientists Say Something Bizarre Is Hiding Inside Black Holes

Mathematicians and physicists propose that prime numbers could describe black hole interiors, offering a novel mathematical framework for understanding these cosmic mysteries.
Science
fromBig Think
3 weeks ago

A quirk of relativity is the closest thing to achieving immortality

While immortality is impossible due to thermodynamic laws, relativity reveals physical scenarios that maximize lifespan relative to the universe by manipulating spacetime through motion and gravity.
fromBig Think
1 week ago

Gravity and quantum physics are fundamentally incompatible

General Relativity has yet to let us down. Its success rate is 100%, from tabletop experiments to gravitational lensing and the formation of the great cosmic web.
OMG science
Running
fromiRunFar
1 month ago

Time, the Great Unifier

Dylan Harris's film 'The Cutoff' explores how time functions as both constraint and possibility in ultramarathon running, revealing triumph and heartbreak among runners pursuing the Cocodona 250 Mile cutoffs.
#gravitational-waves
fromwww.scientificamerican.com
2 weeks ago
OMG science

A boom in gravitational waves leaves scientists with more questions than answers

A global network of gravitational-wave observatories has detected 218 candidate events, revealing complex structures in cosmic mergers and providing unprecedented insights into the universe.
fromwww.scientificamerican.com
4 weeks ago
OMG science

Newly discovered ripples in spacetime put Einstein's general relativity to the test

A global network of gravitational wave observatories has more than doubled detections of cosmic collisions, revealing a universe filled with black holes, neutron stars, and their mergers with unprecedented variety and characteristics.
OMG science
fromwww.scientificamerican.com
2 weeks ago

A boom in gravitational waves leaves scientists with more questions than answers

A global network of gravitational-wave observatories has detected 218 candidate events, revealing complex structures in cosmic mergers and providing unprecedented insights into the universe.
OMG science
fromwww.scientificamerican.com
4 weeks ago

Newly discovered ripples in spacetime put Einstein's general relativity to the test

A global network of gravitational wave observatories has more than doubled detections of cosmic collisions, revealing a universe filled with black holes, neutron stars, and their mergers with unprecedented variety and characteristics.
fromBig Think
1 month ago

Ask Ethan: Can quantum entanglement survive a black hole?

According to Einstein's General Relativity, for every black hole that exists within the Universe, there are only three properties that go into it that matter in any way: the black hole's total mass, the black hole's net electric charge, and the black hole's intrinsic angular momentum, and that's it. It doesn't matter what type of matter went into the black hole in order to form it; all that matters is its mass, charge, and angular momentum.
Science
fromBig Think
1 month ago

How Einstein revolutionized the meaning of "where" and "when"

We now recognize that even ideas like "when" and "where" are subject to the laws of Einstein's relativity, and that in relativity, space and time are not absolute quantities, but rather are relative to each and every unique observer.
Science
fromwww.theguardian.com
2 months ago

Tim Travers and the Time Traveler's Paradox review space-hopping comedy asks the big question

For the sheer quantity of its gibbering, jabbering nonsense, this movie deserves some points. That, and the amusing cameo at the end from Keith David as the Simulator, AKA God, who explains to the awestruck mortals that God is an entirely free creator, rather like a self-published novelist, then grows irritated when the mortals think that being self-published is lame: It's not my fault if you don't understand the industry! This is an exhausting indie romp on the subject of time travel,
Film
fromBig Think
1 month ago

Ask Ethan: Will anything persist when the Universe dies?

Star-formation will eventually end, and then the last shining stars will burn out. Galaxies will dissociate due to gravitational interactions, ejecting all masses and leaving only supermassive black holes behind. And then those black holes will decay via Hawking radiation, leaving only cold, stable, isolated bodies, from which no further energy can be extracted, all accelerating away from us within our dark energy-dominated Universe.
Science
Film
fromwww.theguardian.com
2 months ago

It's already yesterday again: the 20 best time-loop movies ranked!

Time-loop films recycle the reset premise while varying stakes and constraints, with urgency or exposition determining whether repetition enhances drama or undermines suspense.
#simulation-hypothesis
#time
fromAeon
1 month ago
Philosophy

Time is real - if you view it through the lens of heat | Aeon Videos

fromAeon
1 month ago
Philosophy

Time is real - if you view it through the lens of heat | Aeon Videos

fromBig Think
2 months ago

Zeno's Paradox resolved by physics, not by math alone

The fastest human in the world, according to the Ancient Greek legend, was the heroine Atalanta. Although she was a famous huntress who joined Jason and the Argonauts in the search for the golden fleece, she was most renowned for the one avenue in which she surpassed all other humans: her speed. While many boasted of how swift or fleet-footed they were, Atalanta outdid them all. No one possessed the capabilities to defeat her in a fair footrace.
Philosophy
Philosophy
fromAeon
2 months ago

When we turned time into a line, we reimagined past and future | Aeon Essays

Modern linear representation of time originated in the 18th century; earlier cultures predominantly held cyclical, celestial-based conceptions of time.
Science
fromFuturism
1 month ago

Physicists Think They Saw a Black Hole Explode

Primordial black holes can evaporate via Hawking radiation and may explosively release particles, potentially explaining a powerful 2023 neutrino detection.
Philosophy
fromAeon
2 months ago

When we turned time into a line, we reimagined past and future | Aeon Essays

The modern linear conception of time arose in the 18th century; earlier Western thought conceived time as cyclical, tied to celestial cycles and eternal recurrence.
Science
fromwww.scientificamerican.com
1 month ago

What came before the big bang?

The Big Bang initiated space, time, and processes that led to humans, and cosmologists now empirically probe the universe's origins despite conceptual challenges.
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