What began with tragedy ended in triumph. This is the untold story of the European Space Agency's pioneering 25-year Cluster ...
Elon Musk proposes satellite-based sunlight control to fight climate change, sparking debate over space geoengineering. The ...
The concept, ripped from a Star Trek episode, would fill Earth's orbit with satellites to harness energy from the Sun and block out solar rays to help cool the climate.