by WikiImages 20世紀ã®å¤ã„天体観測データã¨21世紀ã®æ–°ã—ã„天体観測データを比較ã™ã‚‹ç ”究ã«ã‚ˆã‚Šã€ã‚ãšã‹æ•°åå¹´é–“ã§100個もã®æ˜ŸãŒä¸å¯è§£ã«æ¶ˆå¤±ã—ã¦ã„ã‚‹ã“ã¨ãŒåˆ¤æ˜Žã—ã¾ã—ãŸã€‚自然ç¾è±¡ã«ã‚ˆã‚‹æ¶ˆå¤±ã‚„誤観測ã®å¯èƒ½æ€§ã‚‚ã‚ã‚‹ã‚‚ã®ã®ã€ç ”究者ã¯ã€Œåœ°çƒå¤–知的生命体ã«ã‚ˆã‚‹ä½•ã‚‰ã‹ã®æ´»å‹•ã®ç—•è·¡ã€ã¨ã„ã†å¯èƒ½æ€§ã‚‚排除ã—ã¦ã„ãªã„ãã†ã§ã™ã€‚ The Vanishing and Appearing Sources during a Century of Observations Project. I. USNO Objects Missing in Modern Sky Surveys and Follow-up Observations of a "Missing Star" - IOPscience https://iopscience.iop.org/article/10.3847/1538-3881/ab
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