EnvironmentGhostly clouds are appearing more often due to climate change Noctilucent clouds, silvery blue wisps that float high in our atmosphere, are a rare phenomenon – but rising greenhouse gas emissions mean we are seeing more and more of them Regulars
SpaceWeird magnetic threads in sun's corona seen for the first time New images reveal threads of ultra-hot gas woven throughout the sun's corona, in the most detailed look at previously unseen parts of the atmosphere of our closest star Regulars