Depending on the value of the Hubble constant, this gives an age of about 14 billion years—not far off the current best-estimate of 13.8 billion years. However, there’s a slight complication. The ...

Is the Hubble constant—a key part of how we measure the expansion of our universe—in a crisis? Some cosmologists say yes.

By the late 1930s, astronomers were coming to refer to the slope of Hubble’s graph — the rate at which this recession increases with distance — as Hubble’s constant, and later simply the ...

For years, scientists have worked to chart the universe’s massive structure, aiming to test key models of cosmology. These ...

Together with the standard model of cosmology, the images show that the universe is expanding with a Hubble constant that’s lower than the JWST measurement by about 5.6 kilometers per second per ...

Determining the expansion rate of the universe—known as the Hubble constant—has been a major scientific pursuit ever since ...

The universe has continued expanding since it was born about 13.8 billion years ago. By analyzing the present rate of cosmic expansion, known as the Hubble constant, scientists can estimate the ...

New evidence deepens a mystery around the Hubble constant, one of the most important numbers in cosmology. Nearly 200,000 light-years from Earth, the Large Magellanic Cloud—a satellite galaxy of ...

As such, it’s no wonder we’ve had so much trouble determining a valid Hubble constant that can be measured across multiple methods, the two main ones being what we call standard candles and ...

Freedman's latest calculation, which incorporates data from both the Hubble Telescope and the James Webb Space Telescope, finds a value of 70.4 kilometers per second per megaparsec, plus or minus 3%.

The fate of the universe, or at least the Hubble tension, doesn’t just hinge on JWST. Many other facilities will come online in the next few years, providing more evidence for this investigation.

What is the Hubble Constant, and how do we measure it? The rate at which the universe is expanding is expressed as a value called the Hubble Constant, generally abbreviated as “H 0 ”.