Astronomers using data from ESA’s Planck Space Telescope have created a map of the entire sky that charts the magnetic field shaping our Milky Way Galaxy. Magnetic field of Milky Way Galaxy as seen by ESA’s Planck Space Telescope. Image credit: ESA / Planck Collaboration. Light is a very familiar form of energy and yet some of its properties are all but hidden to everyday human experience. One of these, polarization, carries a wealth of...
