Category archives: Astrophysics

Is new physics needed to explain the early galaxy problem?

Is new physics needed to explain the early galaxy problem?

AstronomyAstrophysicsCosmology

By Invited Researcher

early galaxy problem Author: Rajendra Gupta, Adjunct professor, Physics, L’Université d’Ottawa/University of Ottawa Early universe observations by the James Webb Space Telescope (JWST) cannot be explained by current cosmological models. These models estimate the universe to be 13.8 billion years in age, based on the big-bang expanding universe concept. My research proposes a model that […]

Galaxies from the early Universe are more like our own Milky Way than previously thought

Galaxies from the early Universe are more like our own Milky Way than previously thought

AstronomyAstrophysicsCosmology

By César Tomé

Galaxies from the early Universe are more like our own Milky Way than previously thought, flipping the entire narrative of how scientists think about structure formation in the Universe. Using the James Webb Space Telescope (JWST), an international team of researchers has discovered that galaxies like our own Milky Way dominate throughout the universe and […]

Refsdal measurement of the Universe’s expansion rate

Refsdal measurement of the Universe’s expansion rate

AstronomyAstrophysicsCosmology

By César Tomé

Thanks to data from a magnified, multiply imaged supernova, a team of researchers has successfully used a first-of-its-kind technique based on the Refsdal method to measure the expansion rate of the Universe. Their data provide insight into a longstanding debate in the field and could help scientists more accurately determine the Universe’s age and better […]

The origin of the <i>lensing is low</i> problem

The origin of the lensing is low problem

AstrophysicsCosmologyDIPC Computational Cosmology

By DIPC

Recent studies have revealed that the bending of light around massive galaxies is significantly smaller relative to theoretical expectations. This finding, the so-called lensing is low problem, has been interpreted as a breakdown of our cosmological model. Now, a team of scientists has found that the mismatch between theory and observations is actually caused by […]

A virtual Earth-sized telescope shows how science is changing in the 21st century

A virtual Earth-sized telescope shows how science is changing in the 21st century

AstronomyAstrophysicsPhilosophy of science

By Invited Researcher

In 2019, the Event Horizon Telescope (EHT) collaboration produced the first-ever image of a black hole, stunning the world. Now, scientists are taking it further. The next generation Event Horizon Telescope (ngEHT) collaboration aims to create high-quality videos of black holes. But this next-generation collaboration is groundbreaking in other ways, too. It’s the first large […]