Word: skies
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...soon as these things are opened up, basically every field of astronomy is going to be able to use it some extent,” Blair said. “The most important thing for modern research is to have a set of data of a specific area of sky over a long period of time...
...Harvard College Observatory, home to half a million glass photographic plates of the night sky from over 100 years of observations, is currently in the midst of one of the greatest preservation efforts in astronomical history...
...CENTURY’S WORTH OF SKY...
...These quasars are spectacularly variable, bubbling and flickering and doing all sorts of wonderful things,” Grindlay said. “But the most massive ones vary on time scales of months or even years, and not many data sets have that kind of sky coverage...
Harvard’s collection of plates is the largest in the world both in terms of length of time covered—the plates record over a century’s worth of sky dating from the 1880s to the 1990s—and in terms of breadth, as the plates provide images of the sky from both the northern and southern hemispheres...