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Different observers can disagree about space and time without disagreeing about the laws of physics. In Minkowski spacetime, observers moving relative to one another use different space and time axes, connected by the Lorentz transformation. What remains unchanged is the spacetime interval and the structure of the light cone.... show more

Philosophy Of Physics

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The strangest feature of Anti-de Sitter spacetime may not be its negative curvature. It is the boundary. Light can travel outward, reach this boundary, and return in finite coordinate time. This makes infinity more than something infinitely far away. It becomes part of the causal structure of the spacetime, a feature that later became central to ideas such as holography and AdS/CFT.

The strangest feature of Anti-de Sitter spacetime may not be its negative curvature. It is the boundary. Light can travel outward, reach this boundary, and return in finite coordinate time. This makes infinity more than something infinitely far away. It becomes part of the causal structure of the spacetime, a feature that later became central to ideas such as holography and AdS/CFT.

Philosophy Of Physics

32,119 次观看 • 9 天前

OPINION: ELON AND THE DAWN OF THE WARP AGE While the rest of the world is busy arguing about the present, Elon has been playing a multi-century game of chess. Most people remember his 2013 conference talk for the Hyperloop reveal, but the real bombshell was his take on the Alcubierre Drive. Proposed by theoretical physicist Miguel Alcubierre in 1994, the Alcubierre Drive is a speculative metric that allows a spacecraft to achieve apparent faster-than-light travel. Instead of a ship accelerating through space, which is limited by (the speed of light), the drive manipulates space itself. It works by contracting the fabric of space in front of the vessel and expanding it behind. Essentially, the ship sits in a "bubble" of flat spacetime, effectively "surfing" on a wave of warped reality. Elon did not just call warp drive science fiction; he broke down the physics of warping space so that space itself does the traveling. When you have a mind that views the speed of light not as a ceiling but as a technical challenge to be engineered around, the future starts looking a lot more like Star Trek and a lot less like a stagnant rock in the vacuum. Elon was a decade ahead of the curve. Back then, he noted that while SpaceX was focused on the immediate Mars roadmap, breakthroughs in warp theory were already bubbling at places like NASA. Fast forward to late 2025, and the vision is becoming reality. Former NASA Administrator Charles Bolden once admitted the goal was warp speed, and groundbreaking research even suggested we are finally moving toward manipulating spacetime without needing the impossible amounts of exotic matter we once feared. Source: Journal of Modern Physics, The Debrief, AllThingsD, Elon Musk

OPINION: ELON AND THE DAWN OF THE WARP AGE While the rest of the world is busy arguing about the present, Elon has been playing a multi-century game of chess. Most people remember his 2013 conference talk for the Hyperloop reveal, but the real bombshell was his take on the Alcubierre Drive. Proposed by theoretical physicist Miguel Alcubierre in 1994, the Alcubierre Drive is a speculative metric that allows a spacecraft to achieve apparent faster-than-light travel. Instead of a ship accelerating through space, which is limited by (the speed of light), the drive manipulates space itself. It works by contracting the fabric of space in front of the vessel and expanding it behind. Essentially, the ship sits in a "bubble" of flat spacetime, effectively "surfing" on a wave of warped reality. Elon did not just call warp drive science fiction; he broke down the physics of warping space so that space itself does the traveling. When you have a mind that views the speed of light not as a ceiling but as a technical challenge to be engineered around, the future starts looking a lot more like Star Trek and a lot less like a stagnant rock in the vacuum. Elon was a decade ahead of the curve. Back then, he noted that while SpaceX was focused on the immediate Mars roadmap, breakthroughs in warp theory were already bubbling at places like NASA. Fast forward to late 2025, and the vision is becoming reality. Former NASA Administrator Charles Bolden once admitted the goal was warp speed, and groundbreaking research even suggested we are finally moving toward manipulating spacetime without needing the impossible amounts of exotic matter we once feared. Source: Journal of Modern Physics, The Debrief, AllThingsD, Elon Musk

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A rendering of the beginning of our universe (along one rulial+quantum branch) in our Wolfram Physics Project---and the first steps in the construction of space. (The nodes are not in space; they're what space is made of.)

A rendering of the beginning of our universe (along one rulial+quantum branch) in our Wolfram Physics Project---and the first steps in the construction of space. (The nodes are not in space; they're what space is made of.)

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Surgeon: Can you review this scan? Don’t worry we’ll give you plenty of time and space The time and space:

Surgeon: Can you review this scan? Don’t worry we’ll give you plenty of time and space The time and space:

theRadiologist

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🚨 SCIENTISTS MAY HAVE FOUND A REAL “LOOPHOLE” FOR WARP DRIVES. And for the first time, the math may not completely break physics. For decades, warp drives were considered impossible because they seemed to require massive amounts of “exotic negative energy” that doesn’t exist in usable quantities. But new theoretical models suggest there may be ways to reshape spacetime using far less exotic energy or in some versions, almost none at all. Why this matters: • A warp drive doesn’t actually move the ship faster than light • It compresses spacetime in front of the craft and expands it behind • The ship stays inside a stable bubble while the universe itself moves around it • Einstein’s speed limit remains intact the ship never locally exceeds c The deeper implication is mind-bending: If spacetime can be engineered like this, distance itself becomes programmable. Interstellar travel would stop being an impossible energy problem… and turn into a geometry problem. The universe may not be blocking faster-than-light travel. We may simply be too primitive to shape spacetime correctly yet. What happens when humanity learns to engineer gravity itself? Follow for more frontier physics and reality-bending breakthroughs.

🚨 SCIENTISTS MAY HAVE FOUND A REAL “LOOPHOLE” FOR WARP DRIVES. And for the first time, the math may not completely break physics. For decades, warp drives were considered impossible because they seemed to require massive amounts of “exotic negative energy” that doesn’t exist in usable quantities. But new theoretical models suggest there may be ways to reshape spacetime using far less exotic energy or in some versions, almost none at all. Why this matters: • A warp drive doesn’t actually move the ship faster than light • It compresses spacetime in front of the craft and expands it behind • The ship stays inside a stable bubble while the universe itself moves around it • Einstein’s speed limit remains intact the ship never locally exceeds c The deeper implication is mind-bending: If spacetime can be engineered like this, distance itself becomes programmable. Interstellar travel would stop being an impossible energy problem… and turn into a geometry problem. The universe may not be blocking faster-than-light travel. We may simply be too primitive to shape spacetime correctly yet. What happens when humanity learns to engineer gravity itself? Follow for more frontier physics and reality-bending breakthroughs.

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Rodri: The master of space and time. #EmiratesFACup

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Did you know the James Webb Space Telescope isn’t orbiting Earth at all? The James Webb Space Telescope operates near the Sun–Earth L2 point, about 1.5 million km from Earth. From there, the Sun, Earth, and Moon stay on the same side of the telescope, allowing its giant sunshield to block their heat and light at the same time. That keeps Webb cold and stable enough to detect extremely faint infrared signals from deep space. Because of this, Webb can peer through clouds of cosmic dust and observe galaxies whose light has traveled for more than 13 billion years. Every image it captures is not just a view across space, but a look back into the early history of the universe.

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Trump, The White House & The Head of Space & Technology basically just admitted they can manipulate gravity, time & space, meaning teleportation and hardly anyone is talking about it.

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Xavi Hernandez; genius, master of space&time. this goal? all Xavi. ☝🏽-the recognition of space behind the defender & movement into that space at the right time. ✌🏽-reading the orientation &momentum of Vidic and inferring that the space Pedro wanted the ball in was inaccessible.

Xavi Hernandez; genius, master of space&time. this goal? all Xavi. ☝🏽-the recognition of space behind the defender & movement into that space at the right time. ✌🏽-reading the orientation &momentum of Vidic and inferring that the space Pedro wanted the ball in was inaccessible.

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Grayscale

81,756 次观看 • 1 年前

Deep Space Station 43 is the largest steerable parabolic antenna dish in the Southern Hemisphere. 70-metres in diameter and ~4000 tonnes of moving structure, #DSS43 is a vital link in NASA’s Deep Space Network. 📡

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On March 6, 2015, astronomers reported observing a supernova in a distant spiral galaxy. Although the explosion itself occurred millions of years earlier, the light carrying that event had only just reached Earth after traveling across intergalactic space. This delay is not unusual but a fundamental feature of the universe, where distance and the finite speed of light turn every observation into a glimpse of the past. In this way, telescopes function not just as instruments of sight, but as time machines, revealing events long after they have concluded. Each distant supernova reminds us that the cosmos we observe is a layered history, unfolding to us not as it is now, but as it once was across unimaginable spans of space and time. Credit: NASA/ESA Hubble Space Telescope

On March 6, 2015, astronomers reported observing a supernova in a distant spiral galaxy. Although the explosion itself occurred millions of years earlier, the light carrying that event had only just reached Earth after traveling across intergalactic space. This delay is not unusual but a fundamental feature of the universe, where distance and the finite speed of light turn every observation into a glimpse of the past. In this way, telescopes function not just as instruments of sight, but as time machines, revealing events long after they have concluded. Each distant supernova reminds us that the cosmos we observe is a layered history, unfolding to us not as it is now, but as it once was across unimaginable spans of space and time. Credit: NASA/ESA Hubble Space Telescope

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We're thrilled to collaborate with Circle Ventures to bring USDC to Space and Time. Developers can use USDC to pay for ZK-proven queries on SXT Chain, where the funds are automatically converted into SXT. Space and Time is now connected to the global stablecoin economy.

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Space and Time

47,693 次观看 • 1 年前

What if the inside of black holes are a roiling sea of space and time stretching and compressing in multiple directions?

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Quanta Magazine

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International successes are growing – Lavrov has signed an agreement with Burkina Faso on the non-deployment of weapons in space. A representative of Burkina Faso responded that while he had heard something about space, he did not intend to deploy weapons there for the time being. This is not the end of the dreams – the next step will be the signing of agreements on the joint colonization of Saturn with Botswana and a non-aggression pact between the space fleets in the constellation Cassiopeia with Somalia.

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A cosmic dance in orbit: a time-lapse of the Crew Dragon docking with the ISS 🛰 Today’s approach of the SpaceX spacecraft to the International Space Station was captured in an impressive time-lapse video. The footage showcases the precision of the maneuver amidst the conditions of open space and absolute weightlessness.

A cosmic dance in orbit: a time-lapse of the Crew Dragon docking with the ISS 🛰 Today’s approach of the SpaceX spacecraft to the International Space Station was captured in an impressive time-lapse video. The footage showcases the precision of the maneuver amidst the conditions of open space and absolute weightlessness.

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