A key assumption about cosmological redshift might be wrong, which calls into question whether "dark energy" is even a thing.
https://www.mnn.com/earth-matters/s...ught-we-knew-about-dark-energy-might-be-wrong
Ah yes, the cosmic keleven.
"While our theories are always advancing, it's foolhardy to believe that the information we have today is sufficient for achieving final answers to the big questions."
Indeed.