Most orbiting satellites point down towards Earth, but the satellites of the Constellation Observing System for Meteorology look sideways. Ionosphere and Climate (COSMIC) look towards the curving horizon in order to track the dozens of satellites that are part of the Global Positioning System. By tracking their radio signals, COSMIC is providing atmospheric data that enhances weather forecasts and climate models.
Scientists are using powerful lasers to mimic the effects of supernovae, which are helping to reveal how the magnetic fields of galaxies may have been formed in the early universe. All galaxies have magnetic fields, ones that might affect how fast stars are born, but it hasn’t been discovered where these magnetic fields come from.