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Is it possible to fully understand the universe while living in it?

Through science, we are striving for objective knowledge about the universe around us. But physicists increasingly believe achieving this will never be possible




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Why this is a golden age for life to thrive across the universe

Almost all the stars that will ever exist have already been born, and they have been around long enough for life to evolve on planets that orbit them




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Are space and time illusions? The answer could lie in black holes

Whether space and time are part of the universe or they emerge from quantum entanglement is one of the biggest questions in physics. And we are getting close to the truth




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We are closer than ever to finally proving the multiverse exists

One hundred years ago, we discovered there were other galaxies beyond our own. Now, we might be on the verge of another discovery: that there are other universes




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A microscopic diving board can cheat the second law of thermodynamics

Working with a tiny cantilever, physicists managed to violate the second law of thermodynamics, using less energy than expected to change the cantilever’s motion




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Take a look behind the scenes at the world's largest fusion experiment

Photographer Enrico Sacchetti captures the power and potential of ITER, an international nuclear fusion experiment currently under construction in southern France




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How to unsnarl a tangle of threads, according to physics

A jiggling robot has revealed the ideal vibrating speed to free jumbled fibres




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We may finally know what caused the biggest cosmic explosion ever seen

The gamma ray burst known as GRB221009A is the biggest explosion astronomers have ever glimpsed and we might finally know what caused the blast




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How Einstein was both right and wrong about gravitational waves

A century ago, Albert Einstein suggested that the universe might contain ripples in space-time, known as gravitational waves – but then he changed his mind




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Why ‘sling action’ bowling deceives so many batters in cricket

Experiments in a wind tunnel have revealed why the sling action bowling technique made famous by Sri Lankan cricketer Lasith Malinga is so effective at hoodwinking whoever is batting




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New spin on quantum theory forces rethink of a fundamental physics law

In the quantum realm, a particle’s properties can be separate from the particle itself, including its angular momentum – which could require a rethinking of fundamental laws




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The odds of quantum weirdness being real just got a lot higher

An experiment to test distant particles’ ability to correlate their behaviour is one of the strongest pieces of evidence that classical ideas about reality are incorrect




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Quantum trick lets you cool objects down using nothing at all

Physicists have demonstrated a bizarre cooling effect by setting up a detector to record the absence of photons in a laser experiment




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We can diagnose an object’s quantumness from the way it radiates heat

To determine an object’s quantum properties, you may only need to measure how it exchanges heat with its environment, without touching the object itself




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Tweezers made of light could illuminate the quantum twin paradox

A single ytterbium atom, cooled down to extreme temperatures and manipulated with laser beams, could reveal how gravity affects quantum objects




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How strange ice could form in the extremely hot interiors of planets

In an experiment simulating what happens deep in the interiors of planets, scientists have found that liquid can be compressed into ice crystals – even at extremely high temperatures




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Another blow for dark matter as biggest hunt yet finds nothing

The hunt for particles of dark matter has been stymied once again, with physicists placing constraints on this mysterious substance that are 5 times tighter than the previous best




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Ultracold quantum battery could be charged with quantum tunnelling

Atoms tunnelling through a quantum battery could charge it and also keep it from losing energy, which could give an advantage over conventional batteries




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Can we solve quantum theory’s biggest problem by redefining reality?

With its particles in two places at once, quantum theory strains our common sense notions of how the universe should work. But one group of physicists says we can get reality back if we just redefine its foundations




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How the most precise clock ever could change our view of the cosmos

Forget atomic clocks. Nuclear clocks, which only drop a second every 300 billion years, can test whether nature's fundamental constants are constant after all




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Hopes for new physics dashed by ordinary-looking W bosons at CERN

In 2022, physicists were excited by hints that something was wrong with our understanding of the universe - but new results have put that in doubt




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Our reality seems to be compatible with a quantum multiverse

Even though the strange behaviour we observe in the quantum realm isn’t part of our daily lives, simulations suggest it is likely our reality could be one of the many worlds in a quantum multiverse




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Freak waves may be more dangerous than we thought possible

Experiments in a state-of-the-art wave tank suggest we have underestimated the potential size and power of rogue waves and the risk they pose to offshore infrastructure




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We physicists could learn a lot by stepping beyond our specialisms

A recent atomic physics workshop was outside my dark matter comfort zone, but learning about science beyond my usual boundaries was invigorating, says Chanda Prescod-Weinstein




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Why the words we use in physics obscure the true nature of reality

Simple words like "force" and "particle" can mislead us as to what reality is actually like. Physicist Matt Strassler unpacks how to see things more clearly




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The physicist who argues that there are no objective laws of physics

Daniele Oriti’s pursuit of a theory of quantum gravity has led him to the startling conclusion that the laws of nature don’t exist independently of us – a perspective shift that could yield fresh breakthroughs




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This test could reveal whether gravity is subject to quantum weirdness

If gravity is a truly quantum entity, something as simple as measuring the strength of an object’s gravitational field should change its quantum state




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Tiniest 'ruler' ever measures distances as small as an atom's width

A new technique uses glowing molecules, laser light and microscopes to measure distances as minuscule as 0.1 nanometres – the width of a typical atom




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How a simple physics experiment could reveal the “dark dimension”

Could the universe's missing matter be hiding in a "dark" extra dimension? We now have simple ways to test this outlandish idea - and the existence of extra dimensions more generally




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Indestructible quantum rifts can exist in two places at once

Researchers used a collection of charged atoms to create a quantum superposition of an exotic type of defect




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The laws of physics appear to follow a mysterious mathematical pattern

The symbols and mathematical operations used in the laws of physics follow a pattern that could reveal something fundamental about the universe




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Solving Stephen Hawking’s black hole paradox has raised new mysteries

Physicists finally know whether black holes destroy the information contained in infalling matter. The problem is that the answer hasn’t lit the way to a new understanding of space-time




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Rich biography of Marie Curie shows how she helped women into science

Marie Curie redefined the role of women in science by training a generation of “lab daughters” to have stellar careers, shows Dava Sobel's detailed and intimate new biography, The Elements of Marie Curie




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There may be a cosmic speed limit on how fast anything can grow

Alan Turing's theories about computation seem to have a startling consequence, placing hard limits on how fast or slow any physical process in the universe can grow




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We've seen particles that are massless only when moving one direction

Inside a hunk of a material called a semimetal, scientists have uncovered signatures of bizarre particles that sometimes move like they have no mass, but at other times move just like a very massive particle




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Heat can flow backwards in a gas so thin its particles never touch

A surprising reversal of our usual understanding of the second law of thermodynamics shows that it may be possible for heat to move in the “wrong” direction, flowing from a cold area to a warm one




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What is the price of genius, asks biography of Roger Penrose

The Impossible Man by Patchen Barss salutes Roger Penrose's groundbreaking work in physics and mathematics while challenging the idea that a genius should be exempt from ordinary obligations




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Knots made in a weird quantum fluid can last forever

Shapes created by vortices in water often fall apart, but an odd quantum fluid made from ultracold atoms could support vortex knots that never lose their knottiness




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Jets of liquid bounce off hot surfaces without ever touching them

Droplets of fluid have been known to hover above a hot surface, but a new experiment suggests the same can happen to tiny jets of liquid too




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Launching a huge dust cloud from the moon could ease global warming

Launching a million tonnes of moon dust around Earth could dim sunlight across our planet by 1.8 per cent. This would reduce the global temperature, but whether it would be worth the resources, and the risks involved in such a strategy, are unclear




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Some of the stunning winners of the Sony World Photography Awards

From a sea turtle and diver swimming in harmony in Malaysia to a red-eyed tree frog in its Costa Rican rainforest home, take a peek at some of the winning entries in one of the most prestigious photography competitions




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World's first drilling project to seek natural hydrogen hits a snag

A well in Nebraska is the first in the world to have been drilled in search of naturally occurring geologic hydrogen, but tests to determine how much of the gas it might supply are on hold because of a broken pump




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These bizarre lights in the sky hint at a way to predict earthquakes

Semi-mythical "earthquake lights" may be accompanied by changes to Earth's magnetic field. Now researchers say these changes could be used to forecast major tremors




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Prehistoric Planet 2 review: Attenborough returns to ancient Earth

The second series of this show about Earth 66 million years ago is a joy to watch - but it inspires more than it informs. A little more science would have been nice




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Tonga volcano eruption disrupted satellites halfway around the world

A link between volcanic activity and rising bubbles of low pressure in the ionosphere has now been proven, which may be why the colossal Tonga volcano eruption in 2022 disrupted satellite communications




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Why is China drilling a hole more than 10,000 metres deep?

An oil company in China has started drilling a hole that would be the deepest in the country and among the deepest in the world




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Dried-up lake may explain why California is 'overdue' major earthquake

Pressure on the San Andreas fault from a now-dried lake could have been sufficient to trigger past major earthquakes in California. The lake’s disappearance could explain why there have been no such quakes for nearly 300 years




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Kīlauea volcano: Watch live footage of the eruption in Hawaii

The Kīlauea volcano in Hawaii has begun erupting, spewing volcanic gas and ash across the island




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Humans have pumped so much groundwater, we’ve shifted Earth’s axis

Changes in the distribution of groundwater around the planet between 1993 and 2010 were enough to make Earth's poles drift by 80 centimetres




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There's a gravity 'hole' in the Indian Ocean and now we may know why

Earth appears to have less mass beneath a certain part of the Indian Ocean compared with the rest of the planet. Plumes of magma at the location could explain why