Measurements of the faint afterglow of the Big Bang (known as the cosmic microwave background) are also important. They do not directly measure dark energy or how it evolves, but they provide clues ...

A new analysis of astronomical data suggests unknown physics is at work assisting dark energy in acting almost as ...

One of the Holy Grails in cosmology is a look back at the earliest epochs of cosmic history. Unfortunately, the universe's ...

Cosmic microwave background data support cosmology’s standard model but retain a mystery about the universe’s expansion rate.

The DESI experiment shocked cosmologists with a hint that dark energy varies over time. Now, with more data, the conclusions hold up.

Dark energy, this still mysterious force that accelerates the expansion of the Universe, may have reversed in the distant past. This bold hypothesis, proposed in a new study, could explain ...

Fresh DESI data suggests dark energy may evolve over time, contradicting long-standing cosmic expansion theories.

Harvard astronomer Avi Loeb discusses how scientists trace the cosmic journey of high-energy neutrinos from the Big Bang to ...

The universe has been expanding ever since the Big Bang almost 14 billion years ago, and astronomers believe a kind of invisible force called dark energy is making it accelerate faster. If the ...

Rossana Ruggeri is part of the DESI Collaboration. She receives funding from her ARC DECRA grant. She is affiliated with QUT and UQ. The universe has been expanding ever since the Big Bang almost ...