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Astronomy Jun 19, 2023

Why is the sky dark at night? The 200-year history of a question that transformed our understanding of the universe

As dawn rose over the German city of Bremen on May 7, 1823, Heinrich Olbers put the finishing touches to an article that left his name in history. After the deaths of his wife and daughter, Dr. Olbers had recently given up ...

Astronomy Jun 14, 2023

Astronomers discover new link between dark matter and clumpiness of the universe

In a study published today in the Journal of Cosmology and Astroparticle Physics, researchers at the University of Toronto reveal a theoretical breakthrough that may explain both the nature of invisible dark matter and the ...

Astronomy Jun 8, 2023

Research sheds light on new model of cosmological dark matter

Newcastle University researchers used insights gained from the study of ultracold atomic Bose Einstein condensates to analyze the behavior of fuzzy dark matter, a new model for cosmological dark matter that has recently drawn ...

Astronomy Jun 5, 2023

Big data astronomy: Using statistics in a new way to decipher the universe

The digital age has been a tremendous boon to the fields of both statistics and astronomy. However, according to Dr. Max Bonamente, a professor of physics and astronomy at The University of Alabama in Huntsville (UAH), most ...

Astronomy May 30, 2023

Deriving a general expression for the bispectrum in cosmologies rules out most bouncing models

A team of cosmologists from the University of Paris-Saclay, CNRS/IN2P3, Jagiellonian University and the University of Geneva derived a general expression for the bispectrum in bouncing cosmologies and then compared the results ...

General Physics May 23, 2023

The laws of physics have not always been symmetric, which may explain why you exist

For generations, physicists were sure the laws of physics were perfectly symmetric. Until they weren't.

Astronomy May 11, 2023

Researchers find new approach to explore earliest universe dynamics with gravitational waves

Researchers have discovered a new generic production mechanism of gravitational waves generated by a phenomenon known as oscillons, which can originate in many cosmological theories from the fragmentation into solitonic "lumps" ...

Astronomy May 10, 2023

Stephen Hawking and I created his final theory of the cosmos—here's what it reveals about the origins of time and life

The late physicist Stephen Hawking first asked me to work with him to develop "a new quantum theory of the Big Bang" in 1998. What started out as a doctoral project evolved over some 20 years into an intense collaboration ...

Astronomy May 3, 2023

Study using X-Ray telescope indicates that dark energy is uniformly distributed in space and time

When Edwin Hubble observed distant galaxies in the 1920s, he made the groundbreaking discovery that the universe is expanding. It was not until 1998, however, that scientists observing Type Ia supernovae further discovered ...

Astronomy Apr 26, 2023

Could quantum fluctuations in the early universe enhance the creation of massive galaxy clusters?

Astrophysicists have been trying to understand the formation of cosmological objects and phenomena in the universe for decades. Past theoretical studies suggest that quantum fluctuations in the early universe, known as primordial ...

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