World Space Week this year, which runs between Oct. 4 and Oct. 10,is celebrating how space technology is aiding us in our fight against climate change on Earth — but sometimes it pays to also look outward at what technology can offer us as we expand into space to harness the energy and the worlds that lie out there.
Here we highlight four technologies, look at the challenges that they pose and give some indication of when they might come to fruition — if ever. The time estimates are not necessarily a prediction of when they might happen, but are intended to give a rough idea of how much work still needs to be done on them.
