Astronomers have used the James Webb and Hubble space telescopes to confirm one of the most troubling conundrums in all of physics — that the universe appears to be expanding at bafflingly different speeds depending on where we look.
This problem, known as the Hubble Tension, has the potential to alter or even upend cosmology altogether. In 2019, measurements by the Hubble Space Telescope confirmed the puzzle was real; in 2023, even more precise measurements from the James Webb Space Telescope (JWST) cemented the discrepancy.
Now, a triple-check by both telescopes working together appears to have put the possibility of any measurement error to bed for good. The study, published February 6 in the Astrophysical Journal Letters, suggests that there may be something seriously wrong with our understanding of the universe.
It could still be “gone” in the sense that nothing of this universe exists in its present state. Maybe it will collapse in on itself and a new Big Stretch will occur, and a new universe with new physical laws and new matter/energy will begin.
Maybe that’s how it’s always been. But whether it is finite or infinite, cyclical or linear, we will most certainly end, and that’s a good enough reason to live in the moment.