Hubble constant
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…
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.
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…
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.
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.
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…
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…
Quasars with a Double-Image Gravitational Lens Could Help Finally Figure out how Fast the Universe is Expanding
How fast is the Universe expanding? That's a question that astronomers haven't been able to answer accurately. They have a…
Gravitational waves were only recently observed, and now astronomers are already thinking of ways to use them: like accurately measuring the expansion rate of the Universe
Neutron stars scream in waves of spacetime when they die, and astronomers have outlined a plan to use their gravitational …
How Fast is the Universe Expanding? Hubble and Gaia Team Up to Conduct the Most Accurate Measurements to Date
A new study used data from both Hubble and Gaia in order to obtain the most precise measurements of cosmic…