A mirror universe model might explain why measurements of Hubble constant disagree.
After suffering a technical glitch and going into sleep mode for the second time this year, Hubble is once again…
After thirty years of faithful service, the venerable Hubble is experiencing a technical issue that NASA is still trying to…
Cosmologists have been struggling to understand an apparent tension in their measurements of the present-day 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…
The Nancy Grace Roman Telescope just received a new infrared filter that will allow it to explore even more of…
A new measure of the cosmic microwave background supports an older universe, and raises more problems for cosmology.
Astronomers have made the cosmic distant ladder more accurate, but that has only made the mystery of cosmic expansion even…
A strange celestial tension could be caused by a cosmic tango between events at very small and very large scales.
Astronomers have measured the Hubble constant using astrophysical masers, and the result makes our understanding of cosmic expansion even worse.