The latest cosmology controversy - accelerating or decelerating? #shorts

By Dr. Becky

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What if Nobel Prize winning science was wrong? And not wrong in a small way. Wrong in a way that changes everything we think we know about the Universe. That's the big argument that’s raging in cosmology right now. In 1998, two teams of astronomers discovered that the Universe isn't just expanding, the expansion is accelerating . Something is pushing it apart faster. We call that something dark energy, and have since found lots of other pieces of evidence for it, but still don’t really know what it is yet. That’s what won the Nobel Prize back in 2011, and has since become one of the pillars of our best model of the Universe. But recently a group of cosmologists, Son and collaborators, have claimed the supernova data used to make the discovery has been hiding a bias for thirty years. Which when you correct for that bias, switches the acceleration of the Universe’s expansion rate to a deceleration. Now, like with any paper that poses a big challenge to the most widely accepted the