She is talking about a new estimate of the Hubble constant; the rate at which the universe is expanding. It seems that it is could be 9% higher than previous estimates, and the science community cannt explain why (so far). These are results from ESA's Gaia mission, a mission that is conducting a detailed 3-dimensional survey of the Milky Way. Read the whole story.
Image: Gaia's sky in colour – equirectangular projection. Copyright: ESA/Gaia/DPAC