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| Timeline for 1661 |
1655 • 1657 • 1658 • 1660 • 1663 • 1664 • 1665 • 1666 • 1667 |
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In 1661, Clancy's comet was discovered by the astronomer Theodore Clancy. It returned to Earth every one hundred fifty-seven years. (AUDIO: The Ghosts of N-Space)