“But no one actually ‘looks’ through [modern telescopes]. Margaret Huggins lamented the shift from gazing at the heavens to squinting at tiny patches of light. Now we’ve gone much, much further. In today’s astronomy, photons of light from the sky, along with the celestial secrets they contain, are picked up by electronic detectors, converted into digital data and crunched through impossibly complex equations by some of the most powerful computers on the planet. In 2016, bricklayer-turned-astronomer Gary Fildes described visiting Chile’s Very Large Telescope (VLT) in his best-selling book An Astronomer’s Tale. Incorporating four mirrors, each 27 feet wide, the VLT collects visible and infrared radiation and can distinguish points in the sky separated by less than a millionth of a degree. Here, at the forefront of today’s attempts to understand the stars, Fildes was struck by the sight of scientists hard at work in control rooms, eyes glued not to their telescopes but to banks of screens: ‘They didn’t look as if they had seen the real sky for days.’”
- The Human Cosmos: Civilization and the Stars by Jo Marchant
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