Last update:

Need to accurately measure time in space? Use a COMPASSO

Telling time in space is difficult, but it is absolutely critical for applications ranging from testing relativity to navigating down the road. Atomic clocks, such as those used on the Global Navigation Satellite System network, ...

More news

General Physics
Thin-film tech makes nuclear clocks a 1,000 times less radioactive and more affordable
General Physics
Antineutrino detection gets a boost with novel plastic scintillator
General Physics
Chinese detector to hunt elusive neutrinos deep underground
General Physics
Q&A: Inside the search for dark matter
General Physics
Study claims all observables in nature can be measured with a single constant: The second
General Physics
Explaining physical reality: Physicists 'bootstrap' validity of string theory
General Physics
The physics of random stacking: Perspectives on stability and chaos
General Physics
How do you make a kilogram? Gravity can provide new answers
General Physics
LHCb sheds light on two pieces of the matter–antimatter puzzle: Baryon and beauty hadron decays
General Physics
Physics and emote design: Quantifying clarity in digital images
General Physics
New model find molecular interactions key to creating order in active systems
General Physics
The first search for soft unclustered energy patterns in proton–proton collisions at 13TeV
General Physics
Advanced atom interferometer could help with 'the embarrassing problem' of dark matter
General Physics
AI algorithm intensifies gold ion collisions at near-light speed
General Physics
Eyes on the sun: Naked thallium-205 ion decay reveals history over millions of years
General Physics
Particle that only has mass when moving in one direction observed for first time
General Physics
Alena Tensor—a new hope for unification in physics
General Physics
Behind the model: Visualizing an advanced spectrometer with 3D printing
General Physics
ALICE finds first ever evidence of the antimatter partner of hyperhelium-4
General Physics
Judging knot strength throws people for a loop: Experiment reveals new blind spot in our physical reasoning

Other news

Materials Science
Innovative film combines cooling efficiency with vibrant structural colors
Archaeology
Keyhole surgery on old books leads to discovery of medieval fragments
Cell & Microbiology
Syringe-wielding germs could crack antimicrobial resistance crisis
Condensed Matter
Physicists experimentally observe topological defects in glasses for the first time
Bio & Medicine
Microscopic robots that swim towards chemical signals offer precise drug delivery solutions
Nanophysics
Versatile nanothermometer enables real-time material structure and temperature observation
Ecology
Genetic diversity in Alaska's red king crab may provide climate change resilience
Cell & Microbiology
Single-cell method enables rapid identification of airborne pathogens in real-world environment
Plants & Animals
Chornobyl dogs' genetic differences not due to mutation, study finds
Evolution
Evolutionary map uncovers bacterial survival genes
Ecology
Ecologists reveal key genetic insights for conservation of iconic cockatoo species
Astronomy
Astronomers observe X-ray flashes from a nearby supermassive black hole that accelerate mysteriously
Astronomy
Gaia22ayj is a magnetic accreting white dwarf, astronomers find
Cell & Microbiology
Wrong place, wrong time: Why Zika virus hijacks a protein needed for brain growth
Optics & Photonics
Collaboration tests new method for protecting quantum networks
Bio & Medicine
Scientists engineer nanostructured surfaces hostile to bacteria but friendly to cells
Earth Sciences
Megathrust earthquakes: Modeling the long and short of subduction zones
Cell & Microbiology
Most species of bacteria remain unstudied in scientific research
Astronomy
Gravitational waves may prove black holes' quantum effect and resolve the dark matter problem
Cell & Microbiology
Nuclear speckles identified as key hubs for gene expression regulation

How logic alone may prove that time doesn't exist

Modern physics suggests time may be an illusion. Einstein's theory of relativity, for example, suggests the universe is a static, four-dimensional block that contains all of space and time simultaneously—with no special ...

Study uses thermodynamics to describe expansion of the universe

The idea that the universe is expanding dates from almost a century ago. It was first put forward by Belgian cosmologist Georges Lemaître (1894–1966) in 1927 and confirmed observationally by American astronomer Edwin Hubble ...

Designing a cost-effective X-ray free electron lasers facility

Many advances in structural science since the 1970s were made by probing materials with synchrotron radiation: that is, high energy X-rays generated through accelerating high-energy electrons. The latest generation of such ...

Searching for new asymmetry between matter and antimatter

Once a particle of matter, always a particle of matter. Or not. Thanks to a quirk of quantum physics, four known particles made up of two different quarks—such as the electrically neutral D meson composed of a charm quark ...

Evidence of a new subatomic particle observed

The BESIII collaboration have reported the observation of an anomalous line shape around ppbar mass threshold in the J/ψ→γ3(π+π-) decay, which indicates the existence of a ppbar bound state. The paper was published ...