The growing release of greenhouse gases into the atmosphere could pose a serious threat to the future of space operations, ...
After liftoff, a larger satellite, called KH-9 Hexagon, shot the 26-inch-wide spacecraft into a low-earth orbit so it would continuously circumnavigate the globe at a distance of 500 miles out.
It began with some simple maths by David Attenborough in How Many People Can Live on Planet Earth? shown before Christmas. When he was born in 1926, there were two billion people on Earth. Now, there ...