Close to 4 billion people live in cities. As the driver of environmental challenges, accounting for nearly 70% of the world's carbon emissions, and as sites of critical social disparities, with 863 million dwellers now living in slums, urban settlements are at the heart of global change. This momentum is unlikely to disappear, as approximately 70 millio […]
The first crewed mission to Mars could be a scouting mission. Lockheed Martin's concept is calling for 'astronaut-scientists' to study the Red Planet from orbit for future landing sites, to remotely operate rovers...
These behemoths — which lie at the hearts of most if not all galaxies, and can contain billions of times more mass than the sun — probably form after the collapse of gigantic gas clouds, rather than the death of individual stars, a new study suggests.
A Europeanized Russian Soyuz rocket on May 24 successfully placed two European Galileo positioning, navigation and timing satellites into medium-Earth orbit — the 13th and 14th in a series of 26 Galileo spacecraft, with more to come.