The Planck Satellite

The Planck Satellite was a space telescope launched by the European Space Agency to study the universe's origins. It focused on measuring the Cosmic Microwave Background (CMB), the faint glow leftover from the Big Bang. By analyzing tiny temperature fluctuations in the CMB, Planck helped scientists understand the universe's age, composition, and how structures like galaxies formed. Operating from 2009 to 2013, it provided highly detailed data that refined our cosmological models and deepened our understanding of the universe's early history.