Plotting their motion required returning to theSWEEPS target region with Hubble two years after the first observations were made.
他们需要策划回到扫运动目标区域用哈伯太空望远镜两年后第一次进行了比较研究。
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In doing so, theSWEEPS team also uncovered 42 oddball blue stars with brightness and temperatures typical for stars much younger than ordinary bulge stars.