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Search results for Cosmology

Astronomy 19 hours ago

Hidden dark force may slow cosmic structure growth, not speed it up

Dark matter is often portrayed as a cosmic loner, interacting with itself and the rest of the universe only through gravity. But what if dark matter particles also exert a hidden force on one another?

General Physics 20 hours ago

Horizon edge states gain finite description in string theory calculation

Modern physics theories highlight the key role of horizons—boundaries beyond which information cannot reach an observer—in a variety of cosmological and gravitational phenomena. Two renowned examples of these boundaries are ...

Astronomy Jun 22, 2026

Corrected Pantheon+ analysis of supernovae challenges accelerating universe claim

Research led by the Tata Institute of Fundamental Research, Mumbai, along with Professor Subir Sarkar from the University of Oxford, questions the widely accepted argument that the expansion rate of the universe is accelerating ...

Astronomy Jun 22, 2026

Are asteroid-mass black holes hiding in the cosmic gamma-ray glow?

There are multiple ways to form black holes. The one most commonly taught in high school physics classes is that they are created from the collapse of a dying star. But there is another class of black holes, known as primordial ...

Astronomy Jun 22, 2026

Primordial halo simulations reveal how cosmic storms shaped the universe's first stars

Just a few hundred million years after the Big Bang, the universe was a dark and simple place. There were no galaxies like the Milky Way, no planets, and no heavy elements such as carbon or oxygen. Instead, vast clouds of ...

Astronomy Jun 19, 2026

New JWST images of abnormally well-developed galaxy cluster open up the 'cosmic noon' frontier

A stunningly concentrated and hefty galaxy cluster, from a time in the universe's history when such massive structures aren't expected to have fully formed yet, is challenging cosmic evolution theories. Across a series of ...

Astronomy Jun 17, 2026

Supernova origins explored through primordial black holes

Dr. Shing-Chi Leung, assistant professor of physics at SUNY Polytechnic Institute, has published the article "Primordial Black Hole Triggered Type Ia Supernovae II: Comparison with Supernova Remnants and Galactic Chemical ...

Astrobiology Jun 13, 2026

David Kipping has new take on the existence of advanced life in the universe and the numbers are not encouraging

Between the mid-1970s and early 1980s, two physicists, Michael Hart and Frank Tipler, published a controversial series of papers arguing that extraterrestrial intelligence didn't exist. As they argued, the likelihood that ...

General Physics Jun 12, 2026

Scientist creates 'mini‑universe' to measure time without a clock

A University of Birmingham scientist has built a "mini-universe" that takes a step toward answering one of science's biggest questions: "What is time?" Publishing his findings in Physical Review Research, Professor Giovanni ...

Astronomy Jun 11, 2026

ESA officially adopts ARRAKIHS mission: EU leads the exploration of the low surface brightness universe

The European Space Agency (ESA) has officially adopted ARRAKIHS as a scientific mission, confirming the target launch date of 2030. Matthieu Schaller is part of the science team: "I look forward to learning more about the ...

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