Nasa is racing to save an ageing telescope from falling back to Earth with a daring rescue mission. The US$30 million salvage operation gets under way as soon as this week with the planned launch of a robotic lifesaver. Nasa hired start-up Katalyst Space Technologies to boost the Swift Observatory to a higher orbit where it can continue hunting for some of the universe’s biggest explosions. A three-armed spacecraft built by Katalyst will chase after Swift once it takes off from an atoll in the..
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