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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, ...

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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
General Physics
Theory-based approach gives access to quarks' tiny transverse motion within protons
General Physics
Not so simple machines: Cracking the code for materials that can learn

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Condensed Matter
Resistance measurement approach successfully observes topological signatures in multiterminal Josephson junctions
Planetary Sciences
From Earth to the edge of space: Entire atmosphere dataset could benefit climate models and space weather prediction
Plasma Physics
Energetic particles could help to control plasma flares at the edge of a tokamak
Environment
Earth records hottest year ever in 2024 and the jump was so big it breached a key threshold
Earth Sciences
Ocean temperatures hit record highs in 2024, study finds
Astronomy
Discovery poised to help detect dark matter and pave way to unravel the universe's secrets
Planetary Sciences
Water and carbon dioxide detected in the atmosphere of a hot super-Neptune exoplanet
Nanophysics
Domain wall fluctuations in 2D materials reveal a new mechanism of superconductivity
Archaeology
Neolithic Italian skull cache suggests centuries of ancestor veneration rituals
Political science
Gaza analysis: 64,000 deaths due to violence between October 2023 and June 2024
Cell & Microbiology
Discovery of new skeletal tissue advances regenerative medicine potential
Space Exploration
Spacecraft buzzes Mercury's north pole and beams back stunning photos
Ecology
New research refutes notion that prehistoric kangaroos ran out of food due to specialized diets
Planetary Sciences
AI categorizes 700 million aurora images for better geomagnetic storm forecasting
Social Sciences
Trust paradox: Benefiting from betrayal doesn't always erode trust
Cell & Microbiology
Scientists create comprehensive map of protein locations within human cells
Biotechnology
'RNA lanterns' could offer new insights into viruses and human memory
Cell & Microbiology
May the force not be with you: Cell migration doesn't only rely on generating force
Earth Sciences
Rewriting the equation for deformation and flow of watery glacier ice
Environment
Arsenic's atmospheric journey: New methods reveal environmental toxin's transport pathways

Why are black holes stable against their own gravity?

Neutron stars are timelike matter with a maximum mass of about 2.34 solar masses in quantum chromodynamics (the strong color force). Black holes are spacelike matter that have no maximum mass, but a minimum mass of 2.35 solar ...