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Other Aug 23, 2025

Saturday Citations: Beyond general relativity; gas giants and dark energy; the pleasures of difficult hobbies

This week, researchers pinned down the age of a complete Homo-genus skull found in Greece in 1960 to at least 286,000 years old. Medical researchers reported that the majority of chronic pain patients discontinue cannabis ...

Astronomy Aug 21, 2025

Dark matter in gas giants could collapse into detectable black holes, model suggests

More than 5,000 planets have been discovered beyond our solar system, allowing scientists to explore planetary evolution and consider the possibility of extraterrestrial life. Now, a UC Riverside study published in Physical ...

Astronomy Aug 21, 2025

Dark energy-filled black holes plus DESI data give neutrino masses that make sense

These are exciting times to explore the largest unanswered questions in physics thanks to high-tech experiments and very precise data. That's particularly true of dark energy, the name given to the mysterious driver of the ...

General Physics Aug 20, 2025

Deep beneath the French Alps, scientists hunt for dark matter

The mysterious substance called dark matter is intrinsically invisible. It cannot be directly observed—rather, its presence is inferred by its gravitational influence on the universe, such as binding galaxy clusters together ...

Astronomy Aug 13, 2025

NASA Roman core survey will trace cosmic expansion over time

For thousands of years, humanity viewed the skies as unchanging, except for a few "wandering stars" (that we now know are planets). As we improved our ability to perceive the cosmos with light-gathering telescopes and electronic ...

Astronomy Aug 5, 2025

Sweeping survey maps hundreds of satellite systems orbiting dwarf galaxies

We usually think of satellites as small objects orbiting planets or stars. But in the broader universe, galaxies themselves can have satellites—smaller galaxies bound by gravity that orbit a larger host, carrying with them ...

General Physics Aug 4, 2025

Theories on dark matter's origins point to 'mirror world' and universe's edge

Two recent studies by Professor Stefano Profumo at the University of California, Santa Cruz, propose theories that attempt to answer one of the most fundamental open questions in modern physics: What is the particle nature ...

General Physics Aug 1, 2025

Neutrino masses are not likely to originate from interactions with dark matter, study finds

Neutrinos are fundamental particles characterized by no electric charge and very small masses, which are known to interact with other matter via the weak force or gravity. While these particles have been the focus of numerous ...

General Physics Jul 31, 2025

Internal pair production could enable direct detection of dark matter

Dark matter (DM) is a type of matter estimated to account for 80% of the universe's total mass, but it cannot be directly detected using conventional experimental techniques. As DM does not emit, reflect or absorb light, ...

General Physics Jul 30, 2025

Study outlines alternative approach to detecting inelastic dark matter particles

It is now understood that all known matter, i.e., studied by science and harnessed by technology, constitutes only 5% of the content of the universe. The rest is composed of two unknown components: dark matter (about 27%) ...

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