How Many Nuclear Weapons Exist, and Who Has Them?

Liquid metal, ruby and sapphire could rain down on one hemisphere of a blisteringly hot giant exoplanet that is tidally locked in a tight orbit around its star. That is the conclusion of astronomers who have developed a detailed 3D model of the atmosphere of WASP-121b.

Eugene Parker – Pioneering Astrophysicist Who Discovered Solar Wind – Dies at 94

Covid could cause diabetes in people who had virus as study links conditions