Astronomers tallying up all the normal matter—stars, galaxies and gas—in the universe today have come up embarrassingly short ...

A paper published in 2024 theorizes that time may have existed before the Big Bang, but we're still not entirely sure.

The finest ever map of the cosmic microwave background - the faint evidence of the universe's early form - has yielded ...

In recent years, one of the most troubling puzzles in astrophysics has grown more urgent. Scientists have realized that the ...

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

The Atacama Cosmology Telescope (ACT) collaboration, which includes researchers from the University of Toronto, recently ...

Data from the Atacama Cosmology Telescope (ACT) has now given researchers new detailed images of the universe's earliest ...

Experts have unveiled the most detailed images yet of the universe’s infancy, capturing light that traveled for more than 13 ...

One of the Holy Grails in cosmology is a look back at the earliest epochs of cosmic history. Unfortunately, the universe's first few hundred thousand years are shrouded in an impenetrable fog.

The tension comes from two types of measurements. One approach looks far back in time, using the cosmic microwave background—the faint light left over from the Big Bang. The other relies on ...