Physicist Richard Feynman invented them to describe the interactions between real particles. This article was originally published at The Conversation. The publication contributed the article to Space ...

Black hole singularities defy the laws of physics. New research presents a bold solution to this puzzle: Black holes may actually be a theoretical type of star called a 'gravastar,' filled with ...

Scientists in China have drawn up a wishlist of next-generation space-science missions, but they will still need government backing to go ahead. Ling Xin reports One for the future The Solar Wind ...