April 10
1963: The USS Thresher sinks in the Atlantic Ocean. 837: Halley’s Comet and Earth experienced their closest approach to one another when the distance separating them equaled 0.0342 AU (3.2 million...
View ArticleMay 18
1980: Mount St. Helens erupts in Washington, United States 1910: Earth passes through the tail of Halley’s Comet. Fact 1 What mountain range is Mount St. Helens part of? Is Mount St. Helens an active...
View ArticleAugust 31
1979: A comet hits the sun. Canada, 1906: Roald Amundsen’s Gjoa reaches Nome, Alaska, after becoming the first ship to sail the Northwest Passage. Fact 1 What is a comet? Is it rare for comets to hit...
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