The launch of Axiom Space's fourth private astronaut mission has been delayed again, this time by a leaky Russian module on the International Space Station.
As climate change accelerates and politicians continue to argue, scientists are exploring radical new ways to protect our planet. One of the most ambitious concepts under development is a Planetary Sunshade System (PSS), essentially a massive space based umbrella designed to reduce the amount of sunlight reaching Earth and help stabilise global temperatures.
