Hubble’s measurements of today’s expansion rate do not match the rate that was expected based on how the Universe appeared shortly after the Big Bang over 13 billion years ago. Using new data from the ...

There’s a big debate in cosmology about how fast the universe is currently expanding. The collision of two neutron stars in 2017, seen in an artist's rendering, created both gravitational waves and ...

Astronomers have proposed a new way to solve the so-called “Hubble tension,” but the approach ultimately raises more questions than it answers. By way of background, cosmologists are in a bit of a ...

The new data support one of the two posited values for the Hubble constant. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. A warp in the fabric ...

A cosmic camera hog is helping astronomers figure out the rate of the universe’s expansion. Images of the supernova Refsdal have popped up multiple times in the constellation Leo, thanks to light from ...

Different parts of the universe could have different rates of expansion, potentially explaining the perpelexing "Hubble tension." When you purchase through links on our site, we may earn an affiliate ...

A distant supernova spotted through a strange quirk of gravitational lensing has been used to measure the expansion of the universe. The result adds an unexpected twist to a long-standing tension.

The question of how fast the universe is expanding continues to confound scientists. Although it might seem like a fairly straightforward issue, the reality is that it has been perplexing the best ...