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Articles for Relativity

Scientists propose “DNA of the universe” is gap in Einstein’s hunt for unified physics theory
1 month, 1 week ago

Scientists propose “DNA of the universe” is gap in Einstein’s hunt for unified physics theory

Salon  

When molecular biologist Francis Crick tripped on the psychedelic drug LSD in 1953, his mind famously pulled together all of his previous research on human DNA to conceive of the image of a double helix. “Saying that matter interactions all come from the metric of classical spacetime means, at least naïvely, that quantum spacetime — whatever that means empirically — …

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It all started with a Big Bang – the quest to unravel mystery behind birth of the universe
1 month, 2 weeks ago

It all started with a Big Bang – the quest to unravel mystery behind birth of the universe

Raw Story  

How did everything begin? Just a few millionths of a second after the Big Bang, as the universe expanded and cooled, quarks and gluons clumped together as protons and neutrons, the situation that persists today. From 1965 to 1966, the British theoretical physicists Stephen Hawking and Roger Penrose presented a number of mathematical theorems demonstrating that the spacetime of an …

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Einstein and his peers were 'irrationally resistant' to black holes. This illustrated story explores why
6 months ago

Einstein and his peers were 'irrationally resistant' to black holes. This illustrated story explores why

BBC  

Einstein and his peers were 'irrationally resistant' to black holes. Relative values While some scientists had speculated about the existence of similar objects called "dark stars" more than 200 years ago, it was Einstein's theory of general relativity that laid the ground for understanding how black holes could be created. But, according to physicist Kip Thorne's account in the 1990s, …

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Lunar time scale: What time is it on the moon? Scientists say it’s urgent we figure it out
6 months, 3 weeks ago

Lunar time scale: What time is it on the moon? Scientists say it’s urgent we figure it out

CNN  

Sign up for CNN’s Wonder Theory science newsletter. Scientists aren’t just looking to create a new “time zone” on the moon, as some headlines have suggested, said Cheryl Gramling, the lunar position, navigation, and timing and standards lead at NASA’s Goddard Space Flight Center in Maryland. Rather, the space agency and its partners are looking to create an entirely new …

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Close encounters of the 3D kind: What’s printing next?
9 months, 1 week ago

Close encounters of the 3D kind: What’s printing next?

Hindustan Times  

3D-printing is set to disrupt something that has been fundamentally unchanged since the dawn of the industrial revolution: the process of how things are made. Meanwhile, the first 3D-printed mock meat to be made commercially available — a faux salmon filet made out of mycoprotein — hit supermarket shelves in Europe last year. Though it was too small to be …

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Mint Explainer: Why black holes are on India’s radar
11 months, 3 weeks ago

Mint Explainer: Why black holes are on India’s radar

Live Mint  

If you watched Christopher Nolan’s 2014 movie Interstellar, you would be familiar with the word black hole, even if you do not fully understand what it means. In December 2021, the US-based National Aeronautics Space Agency launched the imaging X-ray polarimetry explorer mission to explore the remnants of supernova explosions, the particle streams emitted by black holes and other cosmic …

India Space Research Black Indian Gravitational Waves Star
Why you age slower on a plane (and other incredibly strange effects of relativity)
1 year, 1 month ago

Why you age slower on a plane (and other incredibly strange effects of relativity)

BBC  

Why you age slower on a plane Edouard Taufenbach/Bastien Pourtout Travelling into a black hole would do strange things to time Einstein correctly predicted that time slows when you're flying fast, but to experience "time dilation" most spectacularly, you'd have to travel into a black hole, says astrophysicist Chris Lintott. If your spacecraft's instruments let you look back to observe …

Travel Black Earth Watch Hole Plane Universe
Is time travel really possible? Here’s what physics says
1 year, 1 month ago

Is time travel really possible? Here’s what physics says

BBC  

Is time travel really possible? "This is where time travel can come in and it is scientifically accurate and there are real-world repercussions from that," says Emma Osborne, an astrophysicist at the University of York, in the UK. "People tie themselves up in knots trying to find ways to rearrange space-time in order to make time travel to the past …

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Remembering A.K. Raychaudhuri: Transformed relativity, almost got fired
1 year, 5 months ago

Remembering A.K. Raychaudhuri: Transformed relativity, almost got fired

The Hindu  

A young Indian physicist was under pressure. A barrier In Raychaudhuri’s time, it was an open problem as to whether the singularities were bugs introduced by the unrealistic simplicity of the models – or features of reality itself. The north-bound ships According to general relativity, every bit of matter tries to move in a straight line in space and time. …

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3D-printed rocket fails just after launch
1 year, 9 months ago

3D-printed rocket fails just after launch

Associated Press  

CAPE CANAVERAL, Fla. — A rocket made almost entirely of 3D-printed parts made its launch debut Wednesday night, lifting off amid fanfare but failing three minutes into flight — far short of orbit. There was nothing aboard Relativity Space’s test flight except for the company’s first metal 3D print made six years ago. Although the upper stage malfunctioned and the …

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3D-printed rocket remains grounded after more launch aborts
1 year, 9 months ago

3D-printed rocket remains grounded after more launch aborts

Associated Press  

CAPE CANAVERAL, Fla. — A rocket made almost completely of 3D-printed parts came within a half-second of blasting off Saturday on its debut flight, but remained grounded after back-to-back launch aborts. The engines ignited, but abruptly shut down, leaving Relativity Space’s rocket, named Terran, standing on its pad. Launch controllers reset the countdown clocks and aimed for the last possible …

Relativity Space Rocket Remains
Launch of 3D-printed rocket aborted minutes before lift-off
1 year, 9 months ago

Launch of 3D-printed rocket aborted minutes before lift-off

India Today  

California-based Relativity Space aborted the launch of a rocket made almost entirely from 3D-printed parts minutes before the scheduled lift-off. Relativity Space's 3D-printed rocket Terran 1 is rolled out to the launch pad at the Cape Canaveral Air Force Station. Relativity, one of a handful of U.S. rocket startups competing to meet the growing demand for cheap launch services, has …

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What we found testing Einstein’s theory of gravity on the scale of the universe
2 years, 1 month ago

What we found testing Einstein’s theory of gravity on the scale of the universe

The Hindu  

Everything in the universe has gravity – and feels it too. Albert Einstein’s theory of general relativity has been remarkably successful in describing the gravity of stars and planets, but it doesn’t seem to apply perfectly on all scales. We believe our approach may one day help resolve some of the biggest mysteries in cosmology, and the results hint that …

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Is our universe a hologram? Research on black holes reveals mind-bending possibility
2 years, 2 months ago

Is our universe a hologram? Research on black holes reveals mind-bending possibility

Firstpost  

In this version of the cosmos, there is no difference between here and there, cause and effect, inside and outside or perhaps even then and now. In one paper, Einstein and Nathan Rosen showed that general relativity predicted that black holes could form in pairs connected by shortcuts through space-time, called Einstein-Rosen bridges — “wormholes.” In the imaginations of science …

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Einstein’s greatest theory challenged by 16 year-long experiment in depths of space
3 years ago

Einstein’s greatest theory challenged by 16 year-long experiment in depths of space

The Independent  

Sign up to our free weekly IndyTech newsletter delivered straight to your inbox Sign up to our free IndyTech newsletter Sign up to our free IndyTech newsletter SIGN UP I would like to be emailed about offers, events and updates from The Independent. Read our privacy policy Einstein’s theory of general relativity has been challenged by a team of researchers …

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There is light behind black hole: Astronomers detect first bursts confirming Einstein's Theory of Relativity
3 years, 4 months ago

There is light behind black hole: Astronomers detect first bursts confirming Einstein's Theory of Relativity

India Today  

Black Holes, the big mass of void that can engulf anything and everything in its path, are known for their immense dark blackness that does not even allow light to pass through. Observed deep in the universe, researchers spotted bright X-Ray flares emerging from a supermassive black hole at the centre of another galaxy, which is nearly 800 million light-years …

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Nobel-winning black hole physics by Penrose, Hawking stands on work of Indian physicist Amal Raychaudhuri
4 years, 2 months ago

Nobel-winning black hole physics by Penrose, Hawking stands on work of Indian physicist Amal Raychaudhuri

Firstpost  

The Raychaudhuri Equation continues to be a key tool in investigating the behaviour of black hole horizons in modern physics. Einstein’s theory of general relativity predicts that a sufficiently compact mass can deform spacetime to form a black hole. Penrose, in collaboration with cosmologist Stephen Hawking, used the Raychauduri equation published in the journal Physical Review in 1955, for a …

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Nobel Prize For Physics 2020 Awarded To Roger Penrose, Jointly To Reinhard Genzel & Andrea Ghez For 'Black Hole' Related Discoveries
4 years, 2 months ago

Nobel Prize For Physics 2020 Awarded To Roger Penrose, Jointly To Reinhard Genzel & Andrea Ghez For 'Black Hole' Related Discoveries

ABP News  

The Royal Swedish Academy of Sciences awarded the first half of the 2020 Nobel Prize in Physics to Roger Penrose and the other half jointly to Reinhard Genzel and Andrea Ghez. The three scientists were honoured with the prestigious award for their discoveries about one of the most exotic phenomena in the universe, the black hole.The jury announcing the award …

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Three Awarded 2020 Nobel in Physics for Two Studies on Black Holes
4 years, 2 months ago

Three Awarded 2020 Nobel in Physics for Two Studies on Black Holes

The Quint  

According to a press release, Penrose used ingenious mathematical methods in his proof that black holes are a direct consequence of Albert Einstein’s general theory of relativity, adding that his “groundbreaking article is still regarded as the most important contribution to the general theory of relativity since Einstein.” On Genzel and Ghez, the Academy said that the duo had “developed …

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