Hubble constant

There’s a Problem With Hubble, and NASA Hasn’t Been Able to fix it yet

After thirty years of faithful service, the venerable Hubble is experiencing a technical issue that NASA is still trying to…

3 months ago

Is the Hubble constant not…Constant?

Cosmologists have been struggling to understand an apparent tension in their measurements of the present-day expansion rate of the universe,…

4 months ago

Black Hole-Neutron Star Collisions Could Finally Settle the Different Measurements Over the Expansion Rate of the Universe

If you've been following developments in astronomy over the last few years, you may have heard about the so-called "crisis…

5 months ago

Nancy Grace Roman Telescope is Getting an Upgraded new Infrared Filter

The Nancy Grace Roman Telescope just received a new infrared filter that will allow it to explore even more of…

6 months ago

New Observations Agree That the Universe is 13.77 Billion Years old

A new measure of the cosmic microwave background supports an older universe, and raises more problems for cosmology.

8 months ago

Astronomers Improve Their Distance Scale for the Universe. Unfortunately, it Doesn't Resolve the Crisis in Cosmology

Astronomers have made the cosmic distant ladder more accurate, but that has only made the mystery of cosmic expansion even…

9 months ago

How Loop Quantum Gravity Could Match Anomalies in the CMB with Large Structures in the Modern Universe

A strange celestial tension could be caused by a cosmic tango between events at very small and very large scales.

1 year ago

Evidence is Building that the Standard Model of the Expansion of the Universe Needs some new Ideas

Astronomers have measured the Hubble constant using astrophysical masers, and the result makes our understanding of cosmic expansion even worse.

1 year ago

A New Test Confirms Dark Energy and the Expansion of the Universe

Our measurements of dark energy give contradictory results. A new study confirms dark energy, but suggests it is more strange…

1 year ago

There’s a new method to measure the expansion rate of the Universe, but it doesn’t resolve the Crisis in Cosmology

In a recent post I wrote about a study that argued dark energy isn't needed to explain the redshifts of…

2 years ago