Recent analysis of Planck data upholds mysteries that have existed since the spacecraft’s first results in 2013. (Credit: ESA/Planck Collaboration)

During its time in orbit, the European Space Agency’s Planck spacecraft gave humanity the most sophisticated measurements ever made of the cosmic microwave background (CMB) radiation, the first flash of light that rippled across the universe after the Big Bang. Plank told us the shape of the universe and confirmed crucial components of the Big Ba